Stereoselective preparation of (Z)-α-stannyl-1-alkenyl sulfoxides via hydrozirconation of acetylenic stannanes
作者:Xian Huang、Ping Zhong、Meng-Ping Guo
DOI:10.1016/s0022-328x(00)00129-7
日期:2000.5
Abstract Acetylenic stannanes ( 1 ) react with Cp 2 Zr(H)Cl (Cp=η 5 -C 5 H 5 ) giving ( Z )-α-stannylvinylzirconium complexes ( 2 ), which are trapped with sulfinyl chlorides ( 3 ) in THF at room temperature to afford ( Z )-α-stannyl-1-alkenyl sulfoxides ( 4 ). The yields are 63–81%. The coupling of 4h with diphenyliodonium chloride in the presence of Pd(PPh 3 ) 4 and CuI afford ( E )-α-phenyl unsaturated