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
摘要 乙炔类锡烷 ( 1 ) 与 Cp 2 Zr(H)Cl (Cp=η 5 -C 5 H 5 ) 反应生成 ( Z )-α-锡基乙烯基锆配合物 ( 2 ),该配合物在 THF 中被亚磺酰氯 ( 3 ) 捕获在室温下得到 (Z)-α-甲锡烷基-1-烯基亚砜 (4)。产率为 63–81%。在 Pd(PPh 3 ) 4 和 CuI 存在下,4h 与氯化二苯基碘鎓偶联得到 (E)-α-苯基不饱和亚砜 5,产率为 75%。