Ozonolysis of Morita-Baylis-Hillman adducts originated from aromatic aldehydes:: an expeditious diastereoselective approach for the preparation of α,β-dihydroxy-esters

被引:11
作者
Abella, Carlos A. M. [1 ]
Rezende, Patricia [1 ]
de Souza, Michele F. Lino [1 ]
Coelho, Fernando [1 ]
机构
[1] Unicamp IQ DQO, Lab Synth Nat Prod & Drug, BR-13084971 Campinas, SP, Brazil
基金
巴西圣保罗研究基金会;
关键词
D O I
10.1016/j.tetlet.2007.10.149
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
We disclose herein ozonolysis of Morita-Baylis-Hillman adducts originated from aromatic aldehydes. This efficient reaction provides alpha-ketoesters with different substitution patterns on the aromatic ring. Diastercoselective reduction of the corresponding alpha-ketoester obtained in the oxidative cleavage step provides alpha,beta-dihydroxy-esters with excellent degree of anti diastereoselection. The method is simple and easy to execute and is therefore a valuable alternative to prepare either alpha-ketoesters or alpha-dihydroxy-esters. (c) 2007 Elsevier Ltd. All rights reserved.
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页码:145 / 148
页数:4
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