| 1. |
Adventures and Excursions in Bioassay: The Stepping Stones to Prostacyclin (Noble Lecture) |
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Angewandte Chemie International Edition in English,
Volume 22,
Issue 10,
1983,
Page 741-752
John R. Vane,
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ISSN:0570-0833
DOI:10.1002/anie.198307413
出版商:Hüthig&Wepf Verlag
年代:1983
数据来源: WILEY
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| 2. |
Formation of CC Bonds by Addition of Free Radicals to Alkenes |
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Angewandte Chemie International Edition in English,
Volume 22,
Issue 10,
1983,
Page 753-764
Bernd Giese,
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摘要:
AbstractThere are many reactions in which CC bonds are formed by addition of free radicals to alkenes. Information about the mechanism is important for the synthesis of specific target molecules. The rate of addition of alkyl radicals to alkenes is controlled by steric and polar effects. The stabilities of the educts and products are of only limited importance, since the transition states for these exothermic reactions occur very early on the reaction coordinate. Variations in reactivity and selectivity can be described using frontier orbital theory: for nucleophilic radicals the dominant interactions are those between SOMO's and LUMO's, and for electrophilic radicals those between SOMO's and HOMO's. The large differences in the steric effects of α ‐ and β‐ substituents of alkenes can be explained by postulating an unsymmetrical transition state— the radical approaches one of the C atoms preferentially. Regioand stereoselectivities can be predicted and are determined, in general, by steric
ISSN:0570-0833
DOI:10.1002/anie.198307531
出版商:Hüthig&Wepf Verlag
年代:1983
数据来源: WILEY
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| 3. |
Raw Materials and Energy: A Challenge for Polymer Research |
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Angewandte Chemie International Edition in English,
Volume 22,
Issue 10,
1983,
Page 764-771
Klaus Weissermel,
Harald Cherdron,
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摘要:
AbstractThe substantial rapid growth of synthetic polymers—plastics, man‐made fibers, films, rubbers, and coatings—which continued unabated over many years, suffered a severe setback for the first time in 1973–1974 followed by another in 1980. A major cause of these reverses was the changed situation with respect to raw materials and energy. For industrial polymer research, in particular, this presents a fresh challenge with considerably changed priorities. The individual ways of meeting this challenge are highlighted and illustrated by examples: the search for alternative raw material sources for monomers; the development of economic methods for production and processing of polymers; the recycling of polymers; and finally the development of new raw material‐saving and energy‐saving technologies based on the use of polymers. In the future, the applications of polymers to new technologies such as communication‐ and information‐systems or biotechnology will join the traditional uses. But the efforts required in research and development to achieve this demand wide‐ranging interdisciplinary cooperation on an even greater sc
ISSN:0570-0833
DOI:10.1002/anie.198307641
出版商:Hüthig&Wepf Verlag
年代:1983
数据来源: WILEY
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| 4. |
Quantitative Separation of Deuterated Tetrahydrofurans C4H4(β)H4‐n(α)Dn(α)O by Complexation Gas Chromatography on a Cobalt(II) Complex |
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Angewandte Chemie International Edition in English,
Volume 22,
Issue 10,
1983,
Page 772-773
Volker Schurig,
Dorothee Wistuba,
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ISSN:0570-0833
DOI:10.1002/anie.198307722
出版商:Hüthig&Wepf Verlag
年代:1983
数据来源: WILEY
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| 5. |
Reversal of the Enantioselectivity in the Enzymatic Hydrolysis of Juvenile Hormone as a Consequence of a Protein Fractionation |
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Angewandte Chemie International Edition in English,
Volume 22,
Issue 10,
1983,
Page 773-774
Martin G. Peter,
Hans‐Peter Stupp,
Klaus‐Ulrich Lentes,
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ISSN:0570-0833
DOI:10.1002/anie.198307731
出版商:Hüthig&Wepf Verlag
年代:1983
数据来源: WILEY
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| 6. |
Phosphane‐Induced, Stepwise Rearrangement of an Octadienediyl Palladium Complex to Seven‐ and Nine‐Membered Metallacycles |
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Angewandte Chemie International Edition in English,
Volume 22,
Issue 10,
1983,
Page 774-775
Holger Michael Büch,
Paul Binger,
Reinhard Benn,
Carl Krüger,
Anna Rufińska,
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ISSN:0570-0833
DOI:10.1002/anie.198307741
出版商:Hüthig&Wepf Verlag
年代:1983
数据来源: WILEY
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| 7. |
(tBuP)8Si2A Novel Dispirocyclic Silaphosphane |
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Angewandte Chemie International Edition in English,
Volume 22,
Issue 10,
1983,
Page 775-776
Marianne Baudler,
Thomas Pontzen,
Ulrike Schings,
Karl‐Friedrich Tebbe,
Magda Fehér,
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ISSN:0570-0833
DOI:10.1002/anie.198307751
出版商:Hüthig&Wepf Verlag
年代:1983
数据来源: WILEY
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| 8. |
Synthesis of a Tetrasaccharide of the Core Region ofO‐Glycoproteins |
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Angewandte Chemie International Edition in English,
Volume 22,
Issue 10,
1983,
Page 776-777
Richard R. Schmidt,
Gerhard Grundler,
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ISSN:0570-0833
DOI:10.1002/anie.198307761
出版商:Hüthig&Wepf Verlag
年代:1983
数据来源: WILEY
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| 9. |
Reversal of the Refioselectivity in the Zirconocene‐induced Coupling of a ketone with Isoprene |
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Angewandte Chemie International Edition in English,
Volume 22,
Issue 10,
1983,
Page 777-778
Gerhard Erker,
Ulrich Dorf,
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摘要:
AbstractThe complete manuscript of this communication appears in:Angew. Chem. Suppl. 1983, 1120. DOI:10.1002/anie.198311200
ISSN:0570-0833
DOI:10.1002/anie.198307771
出版商:Hüthig&Wepf Verlag
年代:1983
数据来源: WILEY
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| 10. |
Diels‐Alder Reactions of Dienes with Alkynes Catalyzed by Diazadieneiron |
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Angewandte Chemie International Edition in English,
Volume 22,
Issue 10,
1983,
Page 778-779
Heindirk tom Dieck,
Reiner Diercks,
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摘要:
AbstractThe complete manuscript of this communication appears in:Angew. Chem. Suppl. 1983, 1138. DOI:10.1002/anie.198311380
ISSN:0570-0833
DOI:10.1002/anie.198307781
出版商:Hüthig&Wepf Verlag
年代:1983
数据来源: WILEY
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