作者:R.B. Woodward、R.A. Olofson、H. Mayer
DOI:10.1016/s0040-4020(01)82192-x
日期:1966.1
Carboxylates react rapidly and smoothly with 3-unsubstituted isoxazolium salts under very mild conditions to yield enol esters. In this paper we report the application of this reaction as the carboxyl-activating step in a simple and practical synthesis of peptides. The utility of the specific peptide forming reagent, N-ethyl-5-phenylisoxazolium-3′-sulfonate, is described in some detail.
羧酸盐在非常温和的条件下与3-未取代的异恶唑鎓盐快速平稳地反应,生成烯醇酯。在本文中,我们报告了该反应作为简单而实用的肽合成中的羧基活化步骤的应用。详细描述了特定的肽形成试剂N-乙基-5-苯基异恶唑-3'-磺酸盐的用途。