An Asymmetric Aerobic Aza-Wacker-Type Cyclization: Synthesis of Isoindolinones Bearing Tetrasubstituted Carbon Stereocenters
作者:Guoqiang Yang、Chaoren Shen、Wanbin Zhang
DOI:10.1002/anie.201203693
日期:2012.9.3
It's all in the solvent: An enantioselective variant of an aza‐Wacker‐type cyclization that gives isoindolinones containing tetrasubstituted carbon centers α to the nitrogen atom has been developed (see scheme; tfa=trifluoroacetate). The use of a highly coordinating solvent is crucial for the activity of the catalyst and the stereoselectivity the reaction (up to 99 % ee).
一切都在溶剂中:已经开发出aza-Wacker型环化的对映体选择性变体,该变体可将含四取代碳中心α的异吲哚啉酮带至氮原子(参见方案; tfa =三氟乙酸盐)。使用高度配位的溶剂对于催化剂的活性和反应的立体选择性(至多99%ee)至关重要 。