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The pyrethrins and related compounds VII. —new pyrethrin‐like compounds with ester and ketonic groups in the alcoholic side chain
Author(s) -
Corral C.,
Elliott M.
Publication year - 1965
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.2740160904
Subject(s) - chemistry , enone , acetic acid , hydrogen bromide , ketone , derivative (finance) , organic chemistry , bromide , side chain , medicinal chemistry , stereochemistry , financial economics , economics , bromine , polymer
Pyrethrin‐like esters of a new type were obtained by reaction of the 4‐bromo derivatives of esters (Et, Pr, Ph) of 3‐methylcyclopent‐2‐enone‐2‐acetic acid with silver chrysanthemates. The structure of the intermediate bromo compounds and hence of the esters was deduced from the ease with which hydrogen bromide was eliminated by tertiary amines to give cyclopentadienones. 2‐Acetonyl‐3‐methylcyclopent‐2‐enone was prepared and by similar reactions gave a chrysanthemyl derivative.