首页>
外国专利>
METHOD OF OBTAINING N-THIOCRABOXYANHYDRIDE OF L-ASPARAGINIC ACID
METHOD OF OBTAINING N-THIOCRABOXYANHYDRIDE OF L-ASPARAGINIC ACID
展开▼
机译:L-天竺葵酸的N-硫代邻苯二甲酰肼的获得方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
An improved process for the preparation of L-aspartic acid N-thiocarboxyanhydride by the reaction of a 0.75 to 1.25 molar solution of an N-alkoxy-thiocarbonyl L-aspartic acid in a lower alkyl acetate solvent with a phosphorous trihalide. The desired product is substantially insoluble in the lower alkyl acetate solvent and is recovered in pure form without further purification or separation steps.
展开▼