摘要:

AbstractPerfluoroalkyl iodides reacted with conjugated dienes in aqueous acetonitrile solution in the presence of sodium dithionite at room temperature to give dimerization products, whereas, perfluoroalkanesulfonyl bromides reacted with conjugated dienes to form 1,4‐adducts under actinic irradiatio

ISSN:1001-604X    

DOI:10.1002/cjoc.19910090111

出版商:Wiley‐VCH Verlag GmbH&Co. KGaA, Weinheim    

年代:1991

数据来源: WILEY

摘要:

AbstractSeveral polyfluoroalkoxyl benzaldehydes were synthesized from the nucleophilic reaction between polyfluoroalkanesulfonate and various sodium phenolates with cetyltrimethylammonium bromide or tetrabutylammonium bromide as PTC. The yields were in the range of 55%–70%. Using a modified procedure Cl(CF2)2SO2Cl was prepared from ClCF2CF2I with an improved yield of 91% and was used to synthesize the polyfluoroalkanesulfonate 2

ISSN:1001-604X    

DOI:10.1002/cjoc.19910090112

出版商:Wiley‐VCH Verlag GmbH&Co. KGaA, Weinheim    

年代:1991

数据来源: WILEY

摘要:

AbstractTwo pentacyclic steroidal bitter principles, taccalonolide E and F, have been isolated fromTacca Plantaginea.Their structures were elucidated by spectroscopic methods.

ISSN:1001-604X    

DOI:10.1002/cjoc.19910090113

出版商:Wiley‐VCH Verlag GmbH&Co. KGaA, Weinheim    

年代:1991

数据来源: WILEY

ISSN:1001-604X    

DOI:10.1002/cjoc.19910090114

出版商:Wiley‐VCH Verlag GmbH&Co. KGaA, Weinheim    

年代:1991

数据来源: WILEY