作者:Mark A. Burlingame、Esteban Mendoza、Gary W. Ashley
DOI:10.1016/j.tetlet.2004.02.029
日期:2004.3
N-Acyl-2-benzoxazolinones readily form trichlorotitanium enolates that react rapidly with aldehydes to provide crystalline syn-aldol adducts in high yield. The resulting products are simply converted to amides, esters, and thioesters. A simple, economical synthesis of 3-hydroxy-2-methylpentanoate N-propionylcysteamine thioesters based on these findings is presented. (C) 2004 Elsevier Ltd. All rights reserved.