A convenient and highly regio and stereoselective method for the synthesis of (E)-3-alkylidene isobenzofuran-1(3H)-ones (phthalides)
作者:Rupa Mukhopadhyay、Nitya G Kundu
DOI:10.1016/s0040-4020(01)00943-7
日期:2001.11
2-Iodobenzyl alcohol on treatment with acetylenic carbinols in the presence of a palladium catalyst and copper(I) iodide as a co-catalyst afforded disubstituted alkynes. Jones oxidation of the disubstituted alkynes led to (E)-3-alkylidene isobenzofuran-1(3H)-ones in good yields in a highly regio and stereoselective manner. The E-isomers were obtained exclusively instead of the more stable Z-isomers
在钯催化剂和碘化铜(I)作为助催化剂的情况下,用炔属甲醇处理2-碘代苄醇,得到二取代炔烃。二取代炔的琼斯氧化以高区域和立体选择性的方式以高收率产生了(E)-3-亚烷基异苯并呋喃-1(3 H)-。该Ë获得的完全不是更稳定的异构体ž异构体。