作者:Feng-Quan Li、Shi Zhong、Gui Lu、Albert S. C. Chan
DOI:10.1002/adsc.200900177
日期:2009.8
synthesis, and their direct access by enantioselective addition of alkyne nucleophiles to ketones has achieved significant progress over the last ten years. In view of the potential applications of acylsilanes as useful synthetic equivalents of aldehydes, we described a general catalytic enantioselective addition of terminal alkynes to alkyl acylsilanes. After reaction optimization involving variation
光学活性的叔炔丙醇是有机合成中有用且用途广泛的组成部分,并且在过去十年中,通过将炔烃亲核体对映选择性加成而直接获得它们,已经取得了重大进展。鉴于酰基硅烷作为醛的有用合成当量的潜在应用,我们描述了末端炔基向烷基酰基硅烷的一般催化对映选择性加成。通过对溶剂,温度,催化剂比例和各种催化剂的筛选进行反应优化后,选择原位生成的Zn-salen配合物作为催化剂。以己烷为溶剂,对于脂肪族和芳香族炔烃,均以令人满意的产率和ee获得甲硅烷基化的叔炔丙醇。