作者:Hao Guo、Lie‐Wei Zhang、Hao Zhou、Wei Meng、Yu‐Fei Ao、De‐Xian Wang、Qi‐Qiang Wang
DOI:10.1002/anie.201910399
日期:2020.2.10
catalyze the decarboxylative Mannich reaction of cyclic aldimines containing a sulfamate heading group. The imine substrate can be activated toward nucleophilic attack of β-ketoacid by a cooperative hydrogen-bonding network enabled by sulfamate-induced dimerization assembly of the macrocycle catalysts. Highly efficient (>95 % yield in most cases) and enantioselective (up to 97.5:2.5 er) transformation
Cyclic Aldimines as Superior Electrophiles for Cu-Catalyzed Decarboxylative Mannich Reaction of β-Ketoacids with a Broad Scope and High Enantioselectivity
作者:Heng-Xia Zhang、Jing Nie、Hua Cai、Jun-An Ma
DOI:10.1021/ol500929d
日期:2014.5.2
enantioselective decarboxylativeMannichreaction of cyclic aldimines with β-ketoacids is described. The cyclic structure of these aldimines, in which the C═N bond is constrained in the Z geometry, appears to be important, allowing Mannich condensation to proceed in high yields with excellent enantioselectivities. A chiral chroman-4-amine was synthesized from the decarboxylativeMannich product in several