Reaction of α,β-unsaturated imidates with Grignard reagents leading to 2-alkyl 1,3-diimines
作者:Seiichi Inoue、Osamu Suzuki、Kikumasa Sato
DOI:10.1039/c39850001773
日期:——
Methyl N-phenylacrylimidate (1a) reacted with alkyl- and aryl-magnesium bromides in ether at 0 °C to give 2-alkyl 1,3-diketones (3a) in a good yield after aqueous work-up; methyl N-phenylcrotonimidate (1b) and N-phenylcinnamimidate (1c) with alkylmagnesium bromides furnished analogous 1,3-diketones (3) as the major products after hydrolysis of the corresponding stable diimines (2).
作者:Kikumasa Sato、Osamu Miyamoto、Seiichi Inoue、Tomomi Ota
DOI:10.1055/s-1982-29717
日期:——
Synthesis of 2-Alkyl-Substituted 1,3-Diketones via the 1,4-Addition of the Grignard Reagents to α,β-Unsaturated Imidates
作者:Seiichi Inoue、Osamu Suzuki、Kikumasa Sato
DOI:10.1246/bcsj.62.1601
日期:1989.5
formed by the reaction of methyl N-phenylacrylimidate with ethylmagnesium bromide in 80% yield. Similar diketones were obtained from methyl N-phenylcrotonimidate and N-phenylcinnamimidate with the Grignardreagents. The coupling of N-magnesio α-methoxy enamine and ketenimine, both of which are formed through the initial 1,4-addition of the Grignardreagent to α,β-unsaturatedimidate, is the most plausible