3,3,3-Trichloropropyl-1-triphenylphosphorane: A Reagent for the Synthesis of (<i>Z</i>)-1,3-Enynes, (<i>Z</i>,<i>Z</i>)-1-Chloro-1,3-dienes, and 1,3-Diynes
作者:Maheswaran S. Karatholuvhu、Philip L. Fuchs
DOI:10.1021/ja045112v
日期:2004.11.1
trichloroacetic acid. Deprotonation of this reagent generates 3,3,3-trichloropropyl-1-triphenylphosphorane, which reacts with aldehydes to give trichloromethylated (Z)-olefins, which are useful for the synthesis of (Z)-1,3-enynes, (Z,Z)-1-chloro-1,3-dienes, and 1,3-diynes in high yields and stereospecificities.
3,3,3-三氯丙基-1-三苯基氯化鏻可方便地由2-氯乙醇、三苯基膦和三氯乙酸制备。该试剂的去质子化生成 3,3,3-三氯丙基-1-三苯基膦,其与醛反应生成三氯甲基化 (Z)-烯烃,可用于合成 (Z)-1,3-烯炔,(Z, Z)-1-氯-1,3-二烯和1,3-二炔的高产率和立体特异性。