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Synthesis of new mono-N-tosylated diamine ligands based on (R)-(+)-limonene and their application in asymmetric transfer hydrogenation of ketones and imines
被引:27
|作者:
Roszkowski, Piotr
[1
]
Maurin, Jan K.
[2
,3
]
Czarnocki, Zbigniew
[1
]
机构:
[1] Univ Warsaw, Fac Chem, PL-02093 Warsaw, Poland
[2] Natl Med Inst, PL-00725 Warsaw, Poland
[3] Natl Ctr Nucl Res, PL-05400 Otwock, Poland
关键词:
LIMONENE OXIDE;
CHIRAL AUXILIARIES;
KINETIC SEPARATION;
AMINO-ALCOHOLS;
COMPLEXES;
ALDEHYDES;
CATALYSTS;
DIETHYLZINC;
DERIVATIVES;
AZIRIDINES;
D O I:
10.1016/j.tetasy.2013.04.010
中图分类号:
O61 [无机化学];
学科分类号:
070301 ;
081704 ;
摘要:
A synthetic procedure leading to the preparation of a new family of enantiopure mono-N-tosylated-1,2-diamines derived from (R)-(+)-limonene is described. (+)-Limonene was transformed into the appropriate N-tosyl derivative using N-tosylaziridination based on chloramine-T trihydrate. Subsequent ring opening by sodium azide afforded the corresponding isomeric azides. Finally, reduction of the azide function gave enantiomerically pure mono-N-tosylated-1,2-diamines. The ligands obtained proved to be effective in the asymmetric transfer hydrogenation protocol on aromatic ketones and imines. (C) 2013 Elsevier Ltd. All rights reserved.
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页码:643 / 650
页数:8
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