| 51. |
Steric Effect in [6+4] Cycloaddition Reactions. Part I |
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Helvetica Chimica Acta,
Volume 56,
Issue 1,
1973,
Page 543-545
H. R. Pfaendler,
Hiroshi Tanida,
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摘要:
AbstractKinetics of cycloaddition of tropone to 6‐methylfulvene and 6,6‐dimethylfulvene were determined. It was concluded that steric effects play a role in [6+4] cycloadditi
ISSN:0018-019X
DOI:10.1002/hlca.19730560152
出版商:WILEY‐VCH Verlag GmbH
年代:1973
数据来源: WILEY
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| 52. |
Steric Effect in [6+4] Cycloadditions. Part II |
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Helvetica Chimica Acta,
Volume 56,
Issue 1,
1973,
Page 545-549
H. R. Pfaendler,
Hiroshi Tanida,
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摘要:
Abstract2‐Chlorotropone reacts with 6,6‐dimethylfulvene to form a 1:1 adduct only. From kinetic data as well as from structural evidence the conclusion was drawn that the [6+4] cycloidditions between tropones and cyclopentadiene or fulvenes are highly disfavoured by substituents at the reaction cen
ISSN:0018-019X
DOI:10.1002/hlca.19730560153
出版商:WILEY‐VCH Verlag GmbH
年代:1973
数据来源: WILEY
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| 53. |
Eine kinetische Studie über Ligandenverdrängungsreaktionen von π‐ Allyl‐π‐cyclopentadienyl‐Metallkomplexen |
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Helvetica Chimica Acta,
Volume 56,
Issue 1,
1973,
Page 549-553
Viktor Harder,
Helmut Werner,
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摘要:
AbstractThe kinetics of the reactions of the complexes C3H5MC5H5(M Ni, Pd) with tertiary phosphites P(OR)3to give M[P(OR)3]4have been investigated. For M Ni and R C2H5, there results a third‐order rate law whereas for M Pd and R C6H5a second‐order rate law is observed. Possible mechanistic implications of the kinetic data will
ISSN:0018-019X
DOI:10.1002/hlca.19730560154
出版商:WILEY‐VCH Verlag GmbH
年代:1973
数据来源: WILEY
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| 54. |
The Conversion of Isoindolobenzazepines into Dibenzazecines: A new Synthesis of α‐Allocryptopine from Schöpf's Base VI |
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Helvetica Chimica Acta,
Volume 56,
Issue 1,
1973,
Page 553-557
S. Teitel,
J. Borgese,
A. Brossi,
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摘要:
AbstractDerHofmann'sche Abbau des Brommethylates1der «Schöpf‐Base VI » gibt zwei ungesättigte Basen, für welche die Strukturen2und3abgeleitet wurden. Das 10gliedrige ces‐Dibenzazecin3konnte in schlechter Ausbeute in das Protopinalkaloid α‐Allocryptopin6überge
ISSN:0018-019X
DOI:10.1002/hlca.19730560155
出版商:WILEY‐VCH Verlag GmbH
年代:1973
数据来源: WILEY
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| 55. |
Méthylène‐10,11‐ et méthyl‐11‐prostaglandine |
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Helvetica Chimica Acta,
Volume 56,
Issue 1,
1973,
Page 557-560
Pierre Vogel,
Pierre Crabbé,
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摘要:
AbstractThe title compounds6and7have been prepared from a natural occurring PG‐A2derivative. The structure and configuration of these novel prostaglandins are deduced from their mode of preparation and from their spectroscopic propertie
ISSN:0018-019X
DOI:10.1002/hlca.19730560156
出版商:WILEY‐VCH Verlag GmbH
年代:1973
数据来源: WILEY
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| 56. |
Erratum |
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Helvetica Chimica Acta,
Volume 56,
Issue 1,
1973,
Page 561-561
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ISSN:0018-019X
DOI:10.1002/hlca.19730560157
出版商:WILEY‐VCH Verlag GmbH
年代:1973
数据来源: WILEY
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| 57. |
Mitteilungen – Communications |
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Helvetica Chimica Acta,
Volume 56,
Issue 1,
1973,
Page 562-567
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ISSN:0018-019X
DOI:10.1002/hlca.19730560158
出版商:WILEY‐VCH Verlag GmbH
年代:1973
数据来源: WILEY
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| 58. |
Masthead |
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Helvetica Chimica Acta,
Volume 56,
Issue 1,
1973,
Page -
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ISSN:0018-019X
DOI:10.1002/hlca.19730560101
出版商:WILEY‐VCH Verlag GmbH
年代:1973
数据来源: WILEY
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