Copper-catalyzed synthesis of α,β-unsaturated acylamides via direct amidation from cinnamic acids and N-substituted formamides
作者:Hong Yan、Hailong Yang、Linhua Lu、Defu Liu、Guangwei Rong、Jincheng Mao
DOI:10.1016/j.tet.2013.06.078
日期:2013.9
A highly effective synthesis of α,β-unsaturated acylamides is reported for the first time via copper-catalyzed direct amidation between readily available cinnamic acids and N-substituted formamides. The protocol was easily accessible and practical.
Highly enantioselective catalytic asymmetric epoxidation of α,β-unsaturatedcarboxylic acid imidazolides and simple amides was developed. In the presence of 5–10 mol% of lanthanide–BINOL complexes, the reaction proceeded smoothly with high substrate generality. In particular, in the cases of α,β-unsaturated amides, there was nearly perfect enantioselectivity (>99% ee). The corresponding epoxides were
A novel and efficient protocol for the synthesis of α,β-unsaturated amides has been developed using catalytic amount of Cu(OAc)2 and TBHP as an available oxidant. Oxidative coupling of various unsaturated carboxylic acids with N,N-disubstituted formamides was examined to furnish the desired products in good yields.
Novel unsaturated peroxides, polymeric derived therefrom and their uses
申请人:ELF ATOCHEM NORTH AMERICA, INC.
公开号:EP0667339A1
公开(公告)日:1995-08-16
Novel unsaturated peroxide compositions of Structure A,
are disclosed where the R-Q- grouping contains a polymerizable carbon-carbon double bound, i.e. R is, inter alia, alkyl of 1 to 18 carbons; Q is, inter alia,
where -(X-Ri) shows the point of attachment of the X-R1 group and (R)- shows the point of attachment of the R group to the Q diradical and R2 and R3 include hydrogen; -X- includes a direct bond and -R1 is a peroxide-containing radical, e.g.,
wherein R6, R7, R8 and R9 are, inter alia, alkyl of 1 to 4 carbons and R10 includes t-alkyl of 4 to 12 carbons. Further, polymeric peroxide compositions derived from them and their uses are disclosed.