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Catalytic asymmetric hydrogenation of 1-aza-2-cycloalkene-2-carboxylates catalyzed by a trans-chelating chiral diphosphine PhTRAP-rhodium complex

✍ Scribed by Ryoichi Kuwano; Daisuke Karube; Yoshihiko Ito

Publisher: Elsevier Science
Year: 1999
Tongue: French
Weight: 289 KB
Volume: 40
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(99)01719-0

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✦ Synopsis

A rhodium complex coordinated with a trans-chelating chiral diphosphine (S,S)-(R,R)-PhTRAP was an effective catalyst for asymmetric hydrogenation of N-acyl-1-aza-2-cycloalkene-2-carboxylates, which gave the corresponding protected cyclic or-amino acids with 73-97% ee.

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