作者:Robert B. Lettan、Karl A. Scheidt
DOI:10.1021/ol051030f
日期:2005.7.1
[reaction: see text]. The Lewis base-catalyzed additions of alkynyl nucleophiles to aldehydes, ketones, and imines is described. Mechanistic studies strongly indicate that the use of new triethoxysilylalkynes facilitates access of a reactive hypervalent silicate intermediate. This activated carbon nucleophile subsequently undergoes rapid addition to carbonyl compounds and imines, thus affording the
[反应:请参见文字]。描述了路易斯碱催化的炔基亲核试剂向醛,酮和亚胺的加成。机理研究强烈表明,使用新的三乙氧基甲硅烷基炔可以促进反应性高价硅酸盐中间体的进入。随后,该活性炭亲核试剂快速加入羰基化合物和亚胺中,从而以中等至高收率提供仲炔丙基和叔炔丙基系统。