the Darzens glycidic ester synthesis for converting unsaturated ketones or aldehydes into the homologated β,γ- or α,β-unsaturatedaldehydes employing sulfur ylides is described. The carbonyl group is converted into the unsaturated oxirane which is then rearranged to the new aldehyde. High yields of isomerically pure aldehydes are available by this method and the process is of practical importance in
BORREDON, ELISABETH;DELMAS, MICHEL;GASET, ANTOINE, TETRAHEDRON LETT., 28,(1987) N 17, 1877-1880
作者:BORREDON, ELISABETH、DELMAS, MICHEL、GASET, ANTOINE
DOI:——
日期:——
US4046716A
申请人:——
公开号:US4046716A
公开(公告)日:1977-09-06
US4010213A
申请人:——
公开号:US4010213A
公开(公告)日:1977-03-01
Novel odorants
申请人:Givaudan Corporation
公开号:US04010213A1
公开(公告)日:1977-03-01
Novel odorants of the formulae: ##STR1## wherein R.sup.1 represents a hydrogen atom or a methyl group and R.sup.2 represents a C.sub.1-6 alkyl group and wherein one of the two additional bonds indicated by dots may be present.