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Asymmetric synthesis of tetrasubstituted cyclic amines <i>via</i> aza-Henry reaction using cinchona alkaloid sulfonamide/zinc(<scp>ii</scp>) catalysts

Naoki Yasukawa, Ami Yamanoue, Tsunayoshi Takehara, Takeyuki Suzuki, Shuichi Nakamura

2021Chemical Communications19 citationsDOI

Abstract

The first enantioselective aza-Henry reaction of non-activated cyclic iminoesters, derived from cyclic amino acids, has been developed. Good yields and enantioselectivities were observed for the reaction using our original cinchona alkaloid sulfonamide/zinc(II) catalyst. The transition state was proposed to explain the stereoselectivity based on experiments and DFT calculations.

Topics & Concepts

CinchonaSulfonamideChemistryCatalysisAlkaloidZincCombinatorial chemistryOrganic chemistryCinchona AlkaloidsEnantioselective synthesisMedicinal chemistryAsymmetric Synthesis and CatalysisSynthesis and Catalytic ReactionsChemical Synthesis and Analysis
Asymmetric synthesis of tetrasubstituted cyclic amines <i>via</i> aza-Henry reaction using cinchona alkaloid sulfonamide/zinc(<scp>ii</scp>) catalysts | Litcius