Diastereoselective and Enantioselective Alleno-aldol Reaction of Allenoates with Isatins to Synthesis of Carbinol Allenoates Catalyzed by Gold
作者:Gang Wang、Xiaohua Liu、Yushuang Chen、Jian Yang、Jun Li、Lili Lin、Xiaoming Feng
DOI:10.1021/acscatal.6b00294
日期:2016.4.1
A new asymmetric alleno-aldol addition of allenic esters has been developed that allows the formation of trisubstituted and tetrasubstituted carbinol allenoates diastereoselectively and enantioselectively. The nucleophilic additions of achiral and racemic allenates to isatins proceed well in the presence of AuCl3 and chiral N,N′-dioxide under mild reaction conditions. The results reported herein represent
已经开发了新的烯丙酸酯的不对称烯丙醇醛加成物,其允许非对映地和对映体选择性地形成三取代和四取代的甲醇烯丙酸酯。在温和的反应条件下,在AuCl 3和手性N,N'-二氧化物存在下,非手性和外消旋烯丙酸酯向靛红的亲核加成反应进行得很好。本文报道的结果代表了金属络合物促进的烯丙酸酯的γ-选择性不对称加成到羰基化合物的第一个例子。