Regioselective Hydration of Terminal Alkynes Catalyzed by a Neutral Gold(I) Complex [(IPr)AuCl] and One-Pot Synthesis of Optically Active Secondary Alcohols from Terminal Alkynes by the Combination of [(IPr)AuCl] and Cp*RhCl[(<i>R</i>,<i>R</i>)-TsDPEN]
作者:Feng Li、Nana Wang、Lei Lu、Guangjun Zhu
DOI:10.1021/acs.joc.5b00164
日期:2015.4.3
be a highly effective catalyst for the hydration of terminal alkynes, including aromatic alkynes and aliphatic alkynes. The desired methyl ketones were obtained in high yields with complete regioselectivities. Furthermore, a series of optically active secondary alcohols could be obtained in high yield with good to excellent enatioselectivities via one-pot sequential hydration/asymmetric transfer hydrogenation
发现中性金(I)络合物[(IPr)AuCl](IPr = 1,3-双(二异丙基苯基)咪唑-2-亚烷基)是用于末端炔烃(包括芳族炔烃和脂肪族烃)水合的高效催化剂炔烃。以高产率获得具有完全区域选择性的所需甲基酮。此外,通过[(IPr)AuCl]和Cp *的结合,通过末端炔烃的一锅顺序水合/不对称转移氢化(ATH),可以高收率获得良好的对映选择性的一系列光学活性仲醇。 RhCl [(R,R)-TsDPEN](Cp * =五甲基环戊二烯基,TsDPEN = N-(p-甲苯磺酰基)-1,2-二苯基乙二胺)。值得注意的是,这项研究显示了直接使用中性金(I)配合物代替阳离子配合物作为激活有机合成中多个键的催化剂的潜力。