作者:Fumiyuki Ozawa、Tamio Hayashi
DOI:10.1016/0022-328x(92)83236-b
日期:1992.4
Catalytic asymmetric arylation of 1-(alkoxycarbonyl-2-pyrrolines (4) with aryl triflates (1) in benzene in the presence of a base and a palladium catalyst, prepared in situ by mixing Pd(OAc)2 and (R)-BINAP, gives optically active (R-1-(alkoxycarbonyl-5-aryl-2-pyrrolines (5) of up to 83% ee, together with the regioisomers 1-(alkoxycarbonyl)-5-aryl-3-pyrrolines (6).
在碱和钯催化剂的存在下,通过混合Pd(OAc)2和(R)-BINAP原位制备的1-(烷氧基羰基-2-吡咯啉(4)与芳基三氟甲磺酸酯(1)在苯中的催化不对称芳基化反应得到具有高达83%ee的旋光性的R -1-(烷氧基羰基-5-芳基-2-吡咯啉(5),以及区域异构体1-(烷氧基羰基)-5-芳基-3-吡咯啉(6)。