Enantioselective Organocatalytic Conjugate Addition of Fluorocarbon Nucleophiles to α,β-Unsaturated Aldehydes
作者:Farman Ullah、Gui-Ling Zhao、Luca Deiana、Mingzhao Zhu、Pawel Dziedzic、Ismail Ibrahem、Peter Hammar、Junliang Sun、Armando Córdova
DOI:10.1002/chem.200901260
日期:2009.10.5
A highly chemo‐ and enantioselective organocatalytic addition of fluorocarbon nucleophiles, such as 1‐fluoro‐bis(phenylsulfonyl)methane, to α,β‐unsaturated aldehydes is presented (see scheme). The reactions are catalyzed by simple chiral amines and give access to optically active fluorine derivatives in good yields and up to 95 % ee. Notably, the methodology can be applied to the formation of a chiral
提出了一种高度化学和对映选择性的有机催化碳氟化合物亲核试剂,例如1-氟双(苯磺酰基)甲烷到α,β-不饱和醛中(见方案)。反应由简单的手性胺催化,并以高收率和高达95%ee的产率获得旋光性氟衍生物 。值得注意的是,该方法可以应用于具有高对映选择性的带有氟原子的手性季碳中心的形成。