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Noncovalent Organocatalytic Synthesis of Enantioenriched Terminal Aziridines with a Quaternary Stereogenic Center
被引:46
作者:
De Fusco, Claudia
[1
]
Fuoco, Tiziana
[1
]
Croce, Gianluca
[2
]
Lattanzi, Alessandra
[1
]
机构:
[1] Univ Salerno, Dipartimento Chim & Biol, I-84084 Fisciano, Italy
[2] Univ Piemonte Orientale, DISIT, I-15121 Alessandria, Italy
关键词:
CATALYTIC ASYMMETRIC AZIRIDINATION;
AZA-DARZENS REACTION;
ALPHA-AMINO-ACIDS;
ALPHA;
BETA-UNSATURATED ALDEHYDES;
ENANTIOSELECTIVE AZIRIDINATION;
BIFUNCTIONAL ORGANOCATALYSTS;
MICHAEL ADDITION;
CONSTRUCTION;
STEREOCENTERS;
EPOXIDATION;
D O I:
10.1021/ol3017066
中图分类号:
O62 [有机化学];
学科分类号:
070303 ;
081704 ;
摘要:
A high-yielding and enantioselective access to novel N-Boc terminal aziridines, bearing a quaternary stereogenic center, has been developed via an aza-Michael initiated ring-closure (aza-MIRC) reaction of alpha-acyl acrylates with an N-tosyloxy tert-butyl carbamate catalyzed by a chiral amino thiourea. The feasibility of the aziridine regioselective ring-opening to valuable alpha,alpha-disubstituted alpha-amino acid esters has been demonstrated.
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页码:4078 / 4081
页数:4
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