A Stereoselective Approach to (Z)-1-Silyl-2-aryl-1,3-dienes from 4-(Phenylselanyl)but-1-yne via Palladium-Catalyzed Silylstannylation and Selenoxide Elimination
作者:Masahito Segi、Kazuki Shintaku、Hajime Maeda
DOI:10.1055/s-0032-1317946
日期:——
4-(phenylselanyl)but-1-yne proceeded regio- and stereoselectively, followed by selenoxide elimination via oxidation to give (Z)-1-(trimethylsilyl)-2-(tributylstannyl)buta-1,3-diene in good yield. This conjugated diene underwent the Stille coupling reaction with various aryl iodides in the presence of Pd(PPh3)4 to afford (Z)-2-aryl-1-(trimethylsilyl)buta-1,3-dienes with high stereoselectivity. Reversing the order of
摘要 4-(苯基硒基)丁-1-炔的钯催化甲硅烷基锡烷基化在区域和立体选择性上进行,然后通过氧化消除亚硒酸酯,得到(Z)-1-(三甲基甲硅烷基)-2-(三丁基锡烷基)丁酸酯-1,3 -二烯的收率好。该共轭二烯在Pd(PPh 3)4存在下与各种芳基碘化物进行Stille偶联反应,得到具有高立体选择性的(Z)-2-芳基-1-(三甲基甲硅烷基)丁烯-1,3-二烯。在合成过程中逆转亚硒酸酯消除和Stille偶联反应的顺序也导致(Z)-2-芳基-1-(三甲基甲硅烷基)丁-1,3-二烯的良好产率。 4-(苯基硒基)丁-1-炔的钯催化甲硅烷基锡烷基化在区域和立体选择性上进行,然后通过氧化消除亚硒酸酯,得到(Z)-1-(三甲基甲硅烷基)-2-(三丁基锡烷基)丁酸酯-1,3 -二烯的收率好。该共轭二烯在Pd(PPh 3)4存在下与各种芳基碘化物进行Stille偶联反应,得到具有高立体选择性的(Z)-2-芳基-