Highly Regioselective and Stereoselective Hydrostannylation of (Z)-2-Ethoxycarbonyl-1,3-Enynes Leading to (1E,3E)-2-Ethoxycarbonyl-3-Stannyl-1,3-Dienes
Highly Regio- and Stereoselective Synthesis of (1<i>Z</i>,3<i>E</i>)-2-sulfonyl-3-stannyl-1,3-dienes by hydrostannylation of (<i>Z</i>)-2-sulfonyl-1,3-enynes
作者:Shiyun Xie、Ji Xu、Tao Yan、Mingzhong Cai
DOI:10.3184/174751913x13816588007726
日期:2013.11
The Stille coupling of (E)-alpha-stannylvinyl sulfones with alkynyl bromides in DMF in the presence of Pd(PPh3)(4) and CuI gave (Z)-2-sulfonyl-1,3-enynes in good yields. (Z)-2-Sulfonyl-1,3-enynes underwent palladium-catalysed hydrostannylation with tributyltin hydride to afford highly regio- and stereoselectively (1Z,3E)-2-sulfonyl-3-stannyl-1,3-dienes.