A highly efficient and practical preparation of 2,4-pentadienyltitaniums and their γ-selective addition reaction with aldehydes and ketones
作者:Sentaro Okamoto、Fumie Sato
DOI:10.1016/s0022-328x(00)00911-6
日期:2001.4
were readily prepared from a divalent titanium reagent, Ti(O–i-Pr)4/2i-PrMgCl, and penta-1,4-dien-3-ol or penta-2,4-dien-1-ol derivatives, and the organotitaniums thus prepared reacted with aldehydes and ketones smoothly to afford the corresponding penta-1,4-dien-3-yl carbinols highly predominantly in excellent yield.
被容易地从二价钛试剂制备的各种戊-2,4- dienyltitanium复合物,包括那些具有一个官能团的,钛(O-我-Pr)4 /2我-PrMgCl,和五-1,4- dien- 3-ol或五-2,4-二烯-1-醇衍生物以及如此制得的有机钛与醛和酮平稳反应,从而以优异的收率非常主要地提供相应的五-1,4-二烯-3-基甲醇。