Metal zinc-promoted gem -bisallylation of acid chlorides with allyl chlorides in the presence of chlorotrimethylsilane
作者:Yoshio Ishino、Masatoshi Mihara、Manabu Kageyama
DOI:10.1016/s0040-4039(02)01437-5
日期:2002.9
Treatment of acid chlorides (2) with allyl chlorides (1) in the presence of zinc dust and a catalytic amount of chlorotrimethylsilane (TMSCl) in THF brought about highly facile and effective coupling to give the corresponding gem-bisallylation products. 4-hydroxy-penta-1,6-dienes (3), in good to excellent yields. These reactions are assumed to proceed through allylzinc intermediates generated in situ. (C) 2002 Elsevier Science Ltd. All rights reserved.
ALLYLATION OF ESTERS PROMOTED BY METALLIC DYSPROSIUM IN THE PRESENCE OF MERCURIC CHLORIDE
作者:Yu Jia、Mingfu Zhang、Fenggang Tao、Jingyao Zhou
DOI:10.1081/scc-120006467
日期:2002.1
ABSTRACT In the presence of mercuric chloride, the reactions of esters with allyl bromide and metallic dysprosium in anhydrous THF give diallyl alkyl carbinols in good yields. When γ-butyrolactone is used as the substrate, the corresponding product is 4-allyl-6-heptene-1, 4-diol.