Broadly Effective Enantioselective Diels−Alder Reactions of 1-Amino-substituted-1,3-butadienes
摘要:
[GRAPHICS]A broad range of substituted 1-amino-1,3-butadienes undergo enantloselective Diels-Alder reactions with methacrolein in the presence of 5 mol % of Cr(III)-salen complex 1. The reactions are carried out conveniently, at room temperature, and they afford the cycloadducts in high yields and excellent ee's.
A Cr(salen)-based metal–organic framework as a versatile catalyst for efficient asymmetric transformations
作者:Qingchun Xia、Yan Liu、Zijian Li、Wei Gong、Yong Cui
DOI:10.1039/c6cc06019f
日期:——
A porous Cr(salen)-MOF can serve as an efficient and effective heterogeneous catalyst for a series of important asymmetric transformations including Nazarov cyclization, aminolysis reaction, Diels-Alder and hetero Diels-Alder reactions, resulting...