Asymmetric Catalytic Enantio- and Diastereoselective Boron Conjugate Addition Reactions of α-Functionalized α,β-Unsaturated Carbonyl Substrates
作者:Jian-Bo Xie、Siqi Lin、Shuo Qiao、Guigen Li
DOI:10.1021/acs.orglett.6b01998
日期:2016.8.5
established for the asymmetric boron conjugate addition of B2pin2 onto α-functionalized (involving C, N, O, and Cl) α,β-unsaturated carbonyls under mild, neutral conditions involving Cu[(S)-(R)-ppfa]Cl, AgNTf2, and alcohols. The dual additives of AgNTf2 and alcohols were found to play crucial roles for achieving high catalytic activity and enantio- and diastereoselectivity (up to 98% ee and 70:1 dr).
A synthetically benign deuterium atom transfer (DAT) deuteration of electron-deficient alkenes has been achieved. This DAT protocol realized higher functional group (FG) tolerance and chemoselectivity than the existing method, and allowed access to complex deuterated compounds including a heavy drug and deuterium-labeled amino acids.
已经实现了缺电子烯烃的合成良性氘原子转移 (DAT) 氘化。该 DAT 协议实现了比现有方法更高的官能团 (FG) 耐受性和化学选择性,并允许获得复杂的氘化化合物,包括重药物和氘标记的氨基酸。