γ-C (sp<sup>3</sup>)–H bond functionalisation of α,β-unsaturated amides through an umpolung strategy
作者:Erika Futaki、Norihiko Takeda、Motohiro Yasui、Tetsuro Shinada、Okiko Miyata、Masafumi Ueda
DOI:10.1039/d0ob00125b
日期:——
The nucleophilic γ-phenylation and γ-alkylation of α,β-unsaturated amides have been developed. This umpolung reaction allows the regioselective introduction of phenyl and alkyl groups to a vinylketene N,O-acetal, which is generated in situ from an α,β-unsaturated N-alkoxyamide, followed by N-O bond cleavage in a two-step, one-pot process.
已经开发出α,β-不饱和酰胺的亲核性γ-苯基化和γ-烷基化。通过这种不连续的反应,可以将苯基和烷基区域选择性地引入乙烯基乙烯酮N,O-乙缩醛中,该基团由α,β-不饱和N-烷氧基酰胺原位生成,然后通过两步,一锅过程。