Synthesis of small ring-containing conjugated dienes via the coupling reaction of cyclopropyl- and cyclobutylmagnesium carbenoids with α-sulfonylallyllithiums
synthesized via the coupling reaction of cyclopropyl- and cyclobutylmagnesium carbenoids with α-sulfonylallyllithiums. Small ring cycloalkylmagnesium carbenoids were generated from aryl 1-chlorocycloalkyl sulfoxides and a Grignard reagent, and the resultant magnesium carbenoids were reacted with α-sulfonylallyllithiums, which were prepared via the deprotonation of p-tolyl vinyl sulfones or allyl p-tolyl
Divergent upgrading pathways of sulfones with primary alcohols: nickel-catalyzed α-alkylation under N<sub>2</sub> and metal-free promoted β-olefination in open air
作者:Haiping Yu、Kaiyue Fu、Guang Yang、Mengyu Liu、Peng Yang、Tao Liu
DOI:10.1039/d2cc05882k
日期:——
Coupling of sulfones and alcohols catalyzed by Ni(OAc)2/P(t-Bu)3 undergoes α-alkylation while β-olefination proceeds in the presence of a base and air.