183,99 €
The shift towards being as environmentally-friendly as possible has resulted in the need for this important volume on homogeneous catalysis. Edited by the father and pioneer of Green Chemistry, Professor Paul Anastas, and by the renowned chemist, Professor Robert Crabtree, this volume covers many different aspects, from industrial applications to atom economy. It explains the fundamentals and makes use of everyday examples to elucidate this vitally important field. An essential collection for anyone wishing to gain an understanding of the world of green chemistry, as well as for chemists, environmental agencies and chemical engineers.
Sie lesen das E-Book in den Legimi-Apps auf:
Seitenzahl: 676
Veröffentlichungsjahr: 2014
Cover
Related Titles
Title Page
Copyright
About the Editors
List of Contributors
Chapter 1: Atom Economy – Principles and Some Examples
1.1 Introduction
1.2 Principle of Atom Economy
1.3 Atom Economical by Design: Examples of Reactions Relying on C–H Activation
1.4 Conclusion
References
Chapter 2: Catalysis Involving Fluorous Phases: Fundamentals and Directions for Greener Methodologies
2.1 Introduction
2.2 Directions for Greener Fluorous Methodologies
2.3 Solvents for Fluorous Chemistry
2.4 Ponytails and Partition Coefficients
2.5 Specific Examples of Catalyst Recovery that Exploit Temperature-dependent Solubilities
2.6 Specific Examples of Catalyst Recovery that Exploit Fluorous Solid Phases
2.7 Summary and Perspective
References
Chapter 3: Chemistry and Applications of Iron–TAML Catalysts in Green Oxidation Processes Based on Hydrogen Peroxide
3.1 Introduction
3.2 Properties of Fe–TAMLs and Mechanisms of Oxidation with Hydrogen Peroxide
3.3 Applications of Fe–TAMLs
3.4 Conclusion
References
Chapter 4: Microwave-Accelerated Homogeneous Catalysis in Water
4.1 Introduction
4.2 Suzuki–Miyaura Reactions
4.3 The Stille Reaction
4.4 The Hiyama Cross-Coupling Reaction
4.5 The Heck Reaction
4.6 Carbonylation Reactions
4.7 The Sonogashira Reaction
4.8 Aryl–Nitrogen Couplings
4.9 Aryl–Oxygen Couplings
4.10 Miscellaneous Transformations
4.11 Conclusion
References
Chapter 5: Ionic Liquids and Catalysis: The IFP Biphasic Difasol Process
5.1 Introduction
5.2 The Solvent in Catalytic Reactions
5.3 The Catalytic Oligomerization of Olefins
5.4 The Biphasic Difasol Process
5.5 Conclusion
References
Chapter 6: Immobilization and Compartmentalization of Homogeneous Catalysts
6.1 Introduction
6.2 Soluble Dendrimer-bound Homogeneous Catalysts
6.3 Polymer-bound Homogeneous Catalysts
6.4 Conclusion and Outlook
References
Chapter 7: Industrial Applications of Homogeneous Enantioselective Catalysts
7.1 Introduction and Scope
7.2 Critical Factors for the Technical Application of Homogeneous Enantioselective Catalysts
7.3 Industrial Processes: General Comments
7.4 Hydrogenation of C=C Bonds
7.5 Hydrogenation of C=O Bonds
7.6 Hydrogenation of C=N Bonds
7.7 Oxidation Processes
7.8 Miscellaneous Transformations (Isomerization, Addition Reactions to C=C, C=O and C=N Bonds, Opening of Oxacycles)
7.9 Conclusions and Future Developments
References
Chapter 8: Hydrogenation for C–C Bond Formation
8.1 By-product-free C–C Coupling and the Departure from Preformed Organometallic Reagents
8.2 Hydrogenative Vinylation of Carbonyl Compounds and Imines
8.3 Hydrogenative Allylation of Carbonyl Compounds
8.4 Hydrogenative Aldol and Mannich Additions
8.5 Hydrogenative Acyl Substitution (Reductive Hydroacylation)
8.6 Hydrogenative Carbocyclization
8.7 Future Directions
References
Chapter 9: Organocatalysis
9.1 Introduction
9.2 Catalysts
9.3 Reactions
9.4 Conclusion
References
Chapter 10: Palladacycles in Catalysis
10.1 Introduction
10.2 Catalyst Precursors for C–C and C–X (Heteroatom) Coupling Reactions
10.3 Other Catalytic Reactions Catalyzed by Palladacycles
10.4 Conclusion
References
Chapter 11: Homogeneous Catalyst Design for the Synthesis of Aliphatic Polycarbonates and Polyesters
11.1 Introduction
11.2 Synthesis of Aliphatic Polycarbonates from Epoxides and Carbon Dioxide
11.3 Synthesis of Aliphatic Polyesters
References
Chapter 12: The Aerobic Oxidation of p-Xylene to Terephthalic acid: A Classic Case of Green Chemistry in Action
12.1 Introduction
12.2 Methods of Making Terephthalic Acid Using Stoichiometric Reagents
12.3 Methods for Preparing Terephthalic Acid Using Cobalt Acetate and Dioxygen in Acetic Acid
12.4 Adding Bromide to Improve Terephthalic Acid Production Using Cobalt and Manganese Acetates in Acetic Acid
12.5 Potential Processes Using Water as a Solvent
12.6 Summary and Final Comments
References
Index
End User License Agreement
Table 1.1
Table 3.1
Table 3.2
Table 3.3
Table 3.4
Table 5.1
Table 5.2
Table 5.3
Table 5.4
Table 5.5
Table 5.6
Table 5.7
Table 5.8
Table 5.9
Table 7.1
Table 7.2
Table 7.3
Table 7.4
Table 8.1
Table 12.1
Table 12.2
Table 12.3
Table 12.4
Table 12.5
Table 12.6
Scheme 1.1
Scheme 1.2
Scheme 1.3
Scheme 1.4
Scheme 1.5
Scheme 1.6
Scheme 1.7
Scheme 1.8
Scheme 1.9
Scheme 1.10
Scheme 1.11
Figure 2.1
Figure 2.2
Figure 2.3
Figure 2.4
Scheme 2.1
Scheme 2.2
Scheme 2.3
Figure 2.5
Scheme 2.4
Scheme 2.5
Scheme 3.1
Scheme 3.2
Scheme 3.3
Figure 3.1
Figure 3.2
Scheme 3.4
Figure 3.3
Scheme 3.5
Scheme 3.6
Scheme 3.7
Figure 3.4
Scheme 3.8
Scheme 3.9
Figure 3.5
Figure 3.6
Scheme 3.10
Scheme 3.11
Scheme 3.12
Figure 3.7
Scheme 3.13
Figure 3.8
Figure 3.9
Figure 3.10
Figure 3.11
Scheme 3.14
Scheme 3.15
Scheme 3.16
Scheme 3.17
Scheme 3.18
Scheme 3.19
Scheme 3.20
Figure 3.12
Scheme 3.21
Figure 3.13
Scheme 3.22
Figure 3.14
Figure 3.15
Figure 3.16
Scheme 4.1
Scheme 4.2
Scheme 4.3
Scheme 4.4
Scheme 4.5
Scheme 4.6
Scheme 4.7
Scheme 4.8
Scheme 4.9
Scheme 4.10
Scheme 4.11
Scheme 4.12
Scheme 4.13
Scheme 4.14
Scheme 4.15
Scheme 4.16
Scheme 4.17
Scheme 4.18
Scheme 4.19
Scheme 4.20
Scheme 4.21
Scheme 4.22
Scheme 4.23
Scheme 4.24
Scheme 4.25
Scheme 4.26
Scheme 4.27
Figure 5.1
Figure 5.2
Scheme 5.1
Scheme 5.2
Scheme 5.3
Figure 5.3
Figure 5.4
Scheme 5.4
Figure 5.5
Figure 5.6
Figure 5.7
Figure 5.8
Figure 5.9
Figure 5.10
Scheme 6.1
Scheme 6.2
Scheme 6.3
Figure 6.1
Scheme 6.4
Scheme 6.5
Scheme 6.6
Scheme 6.7
Scheme 6.8
Scheme 6.9
Scheme 6.10
Scheme 6.11
Scheme 6.12
Scheme 6.13
Scheme 6.14
Scheme 6.15
Scheme 6.16
Scheme 6.17
Scheme 6.18
Scheme 6.19
Scheme 6.20
Scheme 6.21
Figure 6.2
Figure 6.3
Figure 6.4
Scheme 6.22
Scheme 6.23
Figure 6.5
Scheme 7.1
Scheme 7.2
Scheme 7.3
Scheme 7.4
Scheme 7.5
Scheme 7.6
Scheme 7.7
Scheme 7.8
Scheme 7.9
Scheme 7.10
Scheme 7.11
Scheme 7.12
Scheme 7.13
Scheme 7.14
Scheme 7.15
Scheme 7.16
Scheme 7.17
Scheme 7.18
Scheme 7.19
Scheme 7.20
Scheme 7.21
Scheme 7.22
Scheme 7.23
Scheme 7.24
Scheme 7.25
Scheme 7.26
Scheme 7.27
Scheme 7.28
Scheme 7.29
Scheme 7.30
Scheme 7.31
Scheme 7.32
Scheme 7.33
Scheme 7.34
Scheme 7.35
Scheme 7.36
Scheme 7.37
Scheme 7.38
Scheme 7.39
Scheme 7.40
Scheme 7.41
Scheme 7.42
Scheme 7.43
Scheme 7.44
Scheme 7.45
Scheme 7.46
Scheme 7.47
Scheme 7.48
Scheme 7.49
Scheme 7.50
Scheme 7.51
Scheme 7.52
Scheme 8.1
Scheme 8.2
Scheme 8.3
Scheme 8.4
Scheme 8.5
Scheme 8.6
Scheme 8.7
Scheme 8.8
Scheme 8.9
Scheme 8.10
Scheme 8.11
Scheme 8.12
Scheme 8.13
Scheme 8.14
Scheme 8.15
Scheme 8.16
Scheme 8.17
Scheme 8.18
Scheme 8.19
Scheme 8.20
Scheme 8.21
Scheme 8.22
Scheme 8.23
Scheme 8.24
Scheme 8.25
Scheme 8.26
Scheme 8.27
Scheme 8.28
Scheme 8.29
Scheme 8.30
Scheme 8.31
Scheme 8.32
Scheme 8.33
Scheme 8.34
Scheme 8.35
Scheme 8.36
Scheme 8.37
Scheme 8.38
Scheme 8.39
Scheme 8.40
Scheme 8.41
Scheme 8.42
Scheme 8.43
Scheme 9.1
Scheme 9.2
Scheme 9.3
Scheme 9.4
Scheme 9.5
Scheme 9.6
Scheme 9.7
Scheme 9.8
Scheme 9.9
Scheme 9.10
Scheme 9.11
Scheme 9.12
Scheme 9.13
Scheme 9.14
Scheme 9.15
Scheme 9.16
Scheme 9.17
Scheme 9.18
Scheme 9.19
Scheme 9.20
Scheme 9.21
Scheme 9.22
Scheme 9.23
Scheme 9.24
Scheme 9.25
Scheme 9.26
Scheme 9.27
Scheme 9.28
Scheme 9.29
Scheme 9.30
Scheme 9.31
Scheme 9.32
Scheme 9.33
Scheme 9.34
Scheme 9.35
Scheme 9.36
Scheme 9.37
Scheme 9.38
Scheme 9.39
Scheme 9.40
Scheme 9.41
Scheme 9.42
Scheme 9.43
Scheme 9.44
Scheme 9.45
Scheme 9.46
Scheme 9.47
Scheme 9.48
Scheme 9.49
Scheme 9.50
Scheme 9.51
Scheme 9.52
Scheme 9.53
Scheme 9.54
Scheme 9.55
Scheme 9.56
Scheme 9.57
Scheme 9.58
Scheme 9.59
Scheme 9.60
Scheme 9.61
Scheme 9.62
Scheme 9.63
Scheme 9.64
Scheme 9.65
Scheme 9.66
Scheme 9.67
Scheme 9.68
Scheme 9.69
Scheme 9.70
Scheme 9.71
Scheme 9.72
Scheme 9.73
Scheme 9.74
Scheme 9.75
Scheme 9.76
Scheme 9.77
Scheme 9.78
Scheme 9.79
Scheme 9.80
Scheme 9.81
Scheme 9.82
Scheme 9.83
Scheme 9.84
Scheme 9.85
Scheme 9.86
Scheme 9.87
Scheme 9.88
Scheme 9.89
Scheme 9.90
Scheme 9.91
Scheme 9.92
Scheme 9.93
Scheme 9.94
Scheme 9.95
Scheme 9.96
Scheme 9.97
Scheme 10.1
Scheme 10.2
Scheme 10.3
Scheme 10.4
Scheme 10.5
Scheme 10.6
Scheme 10.7
Scheme 10.8
Scheme 10.9
Scheme 10.10
Scheme 10.11
Scheme 10.12
Scheme 10.13
Scheme 10.14
Scheme 10.15
Scheme 10.16
Scheme 10.17
Scheme 10.18
Scheme 10.19
Scheme 10.20
Scheme 10.21
Scheme 10.22
Scheme 10.23
Scheme 10.24
Scheme 10.25
Scheme 10.26
Scheme 10.27
Scheme 10.28
Scheme 10.29
Scheme 10.30
Scheme 10.31
Scheme 10.32
Scheme 10.33
Scheme 10.34
Scheme 11.1
Scheme 11.2
Scheme 11.3
Figure 11.1
Scheme 11.4
Scheme 11.5
Scheme 11.6
Scheme 11.7
Scheme 11.8
Scheme 11.9
Scheme 11.10
Scheme 11.11
Scheme 11.12
Scheme 11.13
Scheme 11.14
Scheme 11.15
Scheme 11.16
Scheme 11.17
Scheme 11.18
Scheme 11.19
Scheme 11.20
Scheme 11.21
Scheme 11.22
Scheme 11.23
Scheme 11.24
Scheme 11.25
Scheme 11.26
Scheme 11.27
Scheme 11.28
Scheme 11.29
Scheme 11.30
Scheme 12.1
Scheme 12.2
Scheme 12.3
Scheme 12.4
Scheme 12.5
Scheme 12.6
Scheme 12.7
Scheme 12.8
Scheme 12.9
Scheme 12.10
Scheme 12.11
Figure 12.1
Figure 12.2
Cover
Table of Contents
About the Editors
Chapter 1
ii
iii
iv
xiii
xiv
xv
xvi
xvii
xviii
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
Wasserscheid, P., Welton, T. (eds.)
Ionic Liquids in Synthesis
2nd Edition
2008
ISBN: 978-3-527-31239-9
Sheldon, R. A., Arends, I., Hanefeld, U.
Green Chemistry and Catalysis
2007
ISBN: 978-3-527-30715-9
Cornils, B., Herrmann, W. A., Muhler, M., Wong, C.-H. (eds.)
Catalysis from A - Z
A Concise Encyclopedia
3rd Edition
2007
ISBN: 978-3-527-31438-6
Loupy, A. (ed.)
Microwaves in Organic Synthesis
2nd Edition
2006
ISBN: 978-3-527-31452-2
Kappe, C. O., Stadler, A., Mannhold, R., Kubinyi, H., Folkers, G. (eds.)
Microwaves in Organic and Medicinal Chemistry
2005
ISBN: 978-3-527-31210-8
Volume 1Homogeneous Catalysis
Volume Edited by Robert H. Crabtree
All books published by Wiley-VCH are carefully produced. Nevertheless, authors, editors, and publisher do not warrant the information contained in these books, including this book, to be free of errors. Readers are advised to keep in mind that statements, data, illustrations, procedural details or other items may inadvertently be inaccurate.
Library of Congress Card No.:
applied for
British Library Cataloguing-in-Publication Data
A catalogue record for this book is available from the British Library.
Bibliographic information published by the Deutsche Nationalbibliothek
The Deutsche Nationalbibliothek lists this publication in the Deutsche Nationalbibliografie; detailed bibliographic data are available on the Internet at http://dnb.d-nb.de.
© 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
All rights reserved (including those of translation into other languages). No part of this book may be reproduced in any form – by photoprinting, microfilm, or any other means – nor transmitted or translated into a machine language without written permission from the publishers. Registered names, trademarks, etc. used in this book, even when not specifically marked as such, are not to be considered unprotected by law.
ISBN: 978-3-527-32496-5
Paul T. Anastas joined Yale University as Professor and serves as the Director of the Center for Green Chemistry and Green Engineering there. From 2004–2006, Paul was the Director of the Green Chemistry Institute in Washington, D.C. Until June 2004 he served as Assistant Director for Environment at the White House Office of Science and Technology Policy where his responsibilities included a wide range of environmental science issues including furthering international public-private cooperation in areas of Science for Sustainability such as Green Chemistry. In 1991, he established the industry-government-university partnership Green Chemistry Program, which was expanded to include basic research, and the Presidential Green Chemistry Challenge Awards. He has published and edited several books in the field of Green Chemistry and developed the 12 Principles of Green Chemistry.
Robert Crabtree took his first degree at Oxford, did his Ph.D. at Sussex and spent four years in Paris at the CNRS. He has been at Yale since 1977. He has chaired the Inorganic Division at ACS, and won the ACS and RSC organometallic chemistry prizes. He is the author of an organometallic textbook, and is the editor-in-chief of the Encyclopedia of Inorganic Chemistry and Comprehensive Organometallic Chemistry. He has contributed to C-H activation, H2 complexes, dihydrogen bonding, and his homogeneous tritiation and hydrogenation catalyst is in wide use. More recently, he has combined molecular recognition with CH hydroxylation to obtain high selectivity with a biomimetic strategy.
Hans-Ulrich Blaser
Solvias AG
P.O. Box 4002
Basel
Switzerland
John F. Bower
University of Texas at Austin
Department of Chemistry and Biochemistry
1 University Station A5300
Austin, TX 78712
USA
Geoffrey W. Coates
Cornell University
Department of Chemistry and Chemical Biology
Ithaca, NY 14853
USA
Terrence J. Collins
Carnegie Mellon University
Institute for Green Science
4400 Fifth Avenue
Pittsburgh, PA 15213
USA
Peter I. Dalko
Université Paris Descartes
Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques
UMR 8601
75270 Paris
France
Jairton Dupont
UFRGS
Institute of Chemistry
Laboratory of Molecular Catalysis
avenue Bento Goncalves
9500 Porto Alegre
France
Frédéric Favre
IFP-Lyon
Rond Point de l’échangeur de Solaize – BP 3
69360 Solaize
France
Fabricio R. Flores
UFRGS
Institute of Chemistry
Laboratory of Molecular Catalysis
avenue Bento Goncalves
9500 Porto Alegre
France
Alain Forestière
IFP-Lyon
Rond Point de l’échangeur de Solaize – BP 3
69360 Solaize
France
John A. Gladysz
Texas A&M University
Department of Chemistry
P.O. Box 30012
College Station, TX 77842-3012
USA
Garrett Hoge
Solvias AG
P.O. Box 4002
Basel
Switzerland
François Hugues
IFP-Lyon
Rond Point de l’échangeur de Solaize – BP 3
69360 Solaize
France
Ryan C. Jeske
Cornell University
Department of Chemistry and Chemical Biology
Ithaca, NY 14853
USA
Sushil K. Khetan
Carnegie Mellon University
Institute for Green Science
4400 Fifth Avenue
Pittsburgh, PA 15213
USA
Michael J. Krische
University of Texas at Austin
Department of Chemistry and Biochemistry
1 University Station A5300
Austin, TX 78712
USA
Mats Larhed
Uppsala University
Department of Medicinal Chemistry
Organic Pharmaceutical Chemistry
BMC
Box 574
75123 Uppsala
Sweden
Isabelle McCort-Tranchepain
Université Paris Descartes
Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques
UMR 8601
75270 Paris
France
Audrey Moores
McGill University
Department of Chemistry
801 Sherbrooke Street West
Montreal
QC, H3A 2K6
Canada
Christian Müller
Eindhoven University of Technology
Schuit Institute of Catalysis
Laboratory of Homogeneous Catalysis
Den Dolech 2
P.O. Box 513
5600 MB Eindhoven
The Netherlands
Luke R Odell
Uppsala University
Department of Medicinal Chemistry
Organic Pharmaceutical Chemistry
BMC
Box 574
75123 Uppsala
Sweden
Hélène Olivier-Bourbigou
IFP-Lyon
Rond Point de l’échangeur de Solaize – BP 3
69360 Solaize
France
Walt Partenheimer
E.I. DuPont de Nemours & Co., Inc.
Central Research and Development
Experimental Station
Wilmington, DE 19880-0328
USA
Morgane Petit
Université Paris Descartes
Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques
UMR 8601
75270 Paris
France
Martyn Poliakoff
University of Nottingham
School of Chemistry
University Park
Nottingham, NG7 2RD
UK
Benoît Pugin
Solvias AG
P.O. Box 4002
Basel
Switzerland
Alexander D. Ryabov
Carnegie Mellon University
Institute for Green Science
4400 Fifth Avenue
Pittsburgh, PA 15213
USA
Felix Spindler
Solvias AG
P.O. Box 4002
Basel
Switzerland
Dieter Vogt
Eindhoven University of Technology
Schuit Institute of Catalysis
Laboratory of Homogeneous Catalysis
Den Dolech 2
P.O. Box 513
5600 MB Eindhoven
The Netherlands
Audrey Moores
As many other human activities, chemistry has seen most of its progress being triggered by a constant desire to do things better. The word ‘better’ here is a general term that can encompass concepts as varied as ‘that allows better theoretical understanding’, ‘that allows companies to make significant savings when they use the process in question’ or ‘that saves the experimentalist a lot of strenuous steps in a given synthesis’. Environmental and health-related issues have also been a major drive, in addition to the desire to reduce waste. The Leblanc process [1], one of the first industrial chemical processes, is a good example of this early concern. It provided a route to sodium carbonate, a vital chemical for the development of the textile industry in the early nineteenth century. It was phased out half a century later, due to the combined action of a legislation restricting the right to produce the wasteful hydrochloric acid and calcium sulfide provided by the process, but also to the finding of a cost-effective and less wasteful solution: the Solvay process. The history of chemistry is full of such examples where new methodologies would bring about significant improvements to existing ones. Yet, the main focus of chemists' attention has varied over time, in other words, has not always meant exactly the same thing. The constant pressure to reach new molecular targets has led to a lot of effort being put into seeking high yields. Activation of specific sites, chemo- and regioselectivity, is also a crucial quality in a process. Synthetic challenges were indeed justifying this trend. ‘Make it work’ was the motto. No doubt it was often followed by ‘make it good, too’ but only ‘if you can’. In 1991, though, Trost suggested starting to look at things with a different approach [2]. He presented a set of guidelines to assess the efficiency of a given process, by looking at the number of atoms of the reagent(s) actually ending up in the desired product(s). Atom economy was introduced. In addition to good yield and selectivity (regio-, chemo- and enantioselectivity), atom economy became the third element of the triadic goal that any synthetic chemist should seek. By analogy with the yield, which is an absolute measure, atom economy needed a quantitative criterion to allow comparison and discussion. In Section 1.2.2, some of the proposed criteria will be introduced. Although atom economy is a very simple concept, it nonetheless implied the development of a new and ambitious chemistry [3]. Making it happen involves a fresh look at molecular reactivity: activating groups should be minimized, such as stoichiometric reagents. In this chapter, the principle of atom economy is first presented. A scientific context will provide an avenue to the definition of its criteria. Impact on industry and the tool box of atom economy will also be discussed. Second, some examples using C–H activation will be described.
Lesen Sie weiter in der vollständigen Ausgabe!
Lesen Sie weiter in der vollständigen Ausgabe!
Lesen Sie weiter in der vollständigen Ausgabe!
Lesen Sie weiter in der vollständigen Ausgabe!
Lesen Sie weiter in der vollständigen Ausgabe!
Lesen Sie weiter in der vollständigen Ausgabe!
Lesen Sie weiter in der vollständigen Ausgabe!
Lesen Sie weiter in der vollständigen Ausgabe!
Lesen Sie weiter in der vollständigen Ausgabe!
Lesen Sie weiter in der vollständigen Ausgabe!
Lesen Sie weiter in der vollständigen Ausgabe!
Lesen Sie weiter in der vollständigen Ausgabe!
Lesen Sie weiter in der vollständigen Ausgabe!