Asymmetric Mannich Reaction and Construction of Axially Chiral Sulfone-Containing Styrenes in One Pot from α-Amido Sulfones Based on the Waste–Reuse Strategy
作者:Dongmei Li、Yu Tan、Lei Peng、Shan Li、Nan Zhang、Yidong Liu、Hailong Yan
DOI:10.1021/acs.orglett.8b02087
日期:2018.8.17
simultaneous asymmetric Mannichreaction and the construction of axially chiral sulfone-containing styrenes in one pot from α-amidosulfones based on the waste–reuse strategy was demonstrated. A series of chiral β-amino diesters and axially chiral sulfone-containing styrenes with various functional groups were synthesized in good to excellent yields and enantioselectivities under mild conditions. In
Asymmetric Mannich Reactions with in Situ Generation of Carbamate-Protected Imines by an Organic Catalyst
作者:Jun Song、Hui-Wen Shih、Li Deng
DOI:10.1021/ol062837q
日期:2007.2.1
the synthesis of optically active carbamate-protected chiral alkyl amines. A highly enantioselective Mannich reaction with in situgeneration of carbamate-protected imines from stable alpha-amido sulfones catalyzed by an organic catalyst was developed. This reaction provides a concise and highly enantioselective route converting aromatic and aliphatic aldehydes into optically active aryl and alkyl beta-amino
The instability of carbamate-protected alkyl imines has greatly hampered the development of catalytic asymmetric Mannich reactions suitable for the synthesis of optically active carbamate-protected chiral alkyl amines. A highly enantioselective Mannich reaction with in situ generation of carbamate-protected imines from stable α-amido sulfones catalyzed by an organic catalyst has been developed. This reaction provides a concise and highly enantioselective route converting aromatic and aliphatic aldehydes into optically active aryl and alkyl β-amino acids.