Stereoselective Palladium-Catalyzed Decarboxylative γ-Arylation of Acyclic β,γ-Unsaturated Carboxylic Acids
作者:Ina Scheipers、Eva Koch、Armido Studer
DOI:10.1021/acs.orglett.7b00512
日期:2017.4.7
Palladium-catalyzed γ-arylation of acyclic β,γ-unsaturated carboxylic acids with various aryl iodides is reported. The cascade comprises a decarboxylative γ-palladation of β,γ-unsaturated α,α′-disubstituted carboxylic acids and subsequent C(sp2)–C(sp3) bond formation to provide diaryl vinyl methanes in moderate to good yields and high E/Z-selectivities. Reaction with an enantiomerically pure acid revealed
报道了钯催化的无环β,γ-不饱和羧酸与各种芳基碘化物的γ-芳基化反应。级联反应包括β,γ-不饱和α,α'-二取代羧酸的脱羧γ-palpalation和随后的C(sp 2)–C(sp 3)键形成,从而以中等至良好的收率和高E生成二芳基乙烯基甲烷/ Z-选择性。与对映体纯酸反应显示该过程以高立体特异性进行。