Diastereoselective Hartwig–Buchwald Reaction of Chiral Amines withrac-[2.2]Paracyclophane Derivatives
作者:Michael Kreis、Christian J. Friedmann、Stefan Bräse
DOI:10.1002/chem.200500386
日期:2005.12.9
rac-4-bromo-[2.2]paracyclophane and rac-trifluoromethanesulfonic acid (4-[2.2]paracyclophane) ester was performed with high diastereoselectivities. Kinetic racemic resolution of the starting materials was achieved, providing a rapid access to enantiomerically enriched 4-bromo-[2.2]paracyclophane and the corresponding enantiomerically pure [2.2]paracyclophane amines. Additionally, the first reaction of a secondary
Hartwig-Buchwald将多种手性胺加至rac-4-溴-[2.2]对环环烷和rac-三氟甲磺酸(4- [2.2]对环环烷)酯中,具有很高的非对映选择性。达到了原料的动力学外消旋拆分,可以快速获得对映体富集的4-溴-[2.2]对环环糊精和相应的对映体纯的[2.2]对环环糊精胺。另外,实现了仲胺与[2.2]对环环烷卤化物的第一反应。