The reaction of tartronic esters (1a-d) with 1,1'-carbonyl-di-(1,2,4-triazole), hydrazines or hydroxylamines produces 3-amino/3-alkoxy(aralkoxy)-2,4-dioxo-1,3-oxazolidine-5-carboxylic esters (5,6) which are structurally related to the fungicides Famoxadone (I) and Chlozolinate (II). Under suitable conditions the carboxylic ester of 6 can be converted to a carboxamide (7), carbohydrazide (8) or carbohydroxamic acid (9).
酒石酸酯(1a-d)与1,1'-羰基二-(1,2,4-三唑), 肼或羟胺的反应产生结构相关于杀菌剂Famoxadone(I)和Chlozolinate(II)的3-氨基/3-烷氧(芳基氧)-2,4-二氧杂环-1,3-噁唑啉-5-羧酸酯(5,6)。在适当条件下,6的羧酸酯可以转化为羧酰胺(7)、羧基肼(8)或羧基羟肟酸(9)。