Novel Generation of 3,3,3-Trifluoropropynyllithium and Transformation of the Carbonyl Adducts to Trifluoromethyl-Substituted Allenes
作者:Masaki Shimizu、Masahiro Higashi、Youhei Takeda、Guofang Jiang、Masahito Murai、Tamejiro Hiyama
DOI:10.1055/s-2007-977422
日期:2007.4
A novel method for the generation of 3,3,3-trifluoro-propynyllithium is reported, which involves treatment of trifluoromethyl-substituted enol tosylate, prepared from 1,1-dichloro-3,3,3-trifluoroacetone, with two equivalents of butyllithium. -Palladium-catalyzed coupling reaction of sulfonates of the carbonyl adducts with organozinc reagents gave trifluoromethyl-containing tri- and tetrasubstituted
报道了一种生成 3,3,3-三氟-丙炔基锂的新方法,该方法涉及用两当量的丁基锂处理由 1,1-二氯-3,3,3-三氟丙酮制备的三氟甲基取代的烯醇甲苯磺酸盐. 羰基加合物的磺酸盐与有机锌试剂的钯催化偶联反应得到含三氟甲基的三和四取代的丙二烯。