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Direct asymmetric aldol reactions catalyzed by (4R)-4-(β-Naphthalenyl)methoxy-(S)-proline

✍ Scribed by Zongxuan Shen; Wuhong Chen; Hong Jiang; Yi Ding; Xiaoqing Luo; Yawen Zhang

Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
53 KB
Volume
17
Category
Article
ISSN
0899-0042

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✦ Synopsis

Abstract

A novel proline derivative, (4__R__)‐4‐(β‐Naphthalenyl)methoxy‐(S)‐proline, was conveniently prepared from the naturally occurring (4__S__)‐hydroxy‐(S)‐proline; 5 mol % of this compound efficiently catalyzes the asymmetric aldol reactions of various benzaldehydes with acetone in excess of acetone as the solvent, giving the aldol adducts in good yields with ee up to 89.8%. Chirality 17:119–120, 2005. © 2005 Wiley‐Liss, Inc.

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