9-Fluorenylmethyl succinimidyl, pentachlorophenyl, and benzotriazole-1-yl carbonates were prepared and their reactivity with L-serine and L-serine benzyl ester was compared. The most efficient reagent, 9-fluorenylmethyl succinimidyl carbonate, was used for the preparation of 9-fluorenylmethyloxycarbonyl derivatives of other hydroxyamino acids and hydroxyamino acid esters in high yields. The use of trichloroethyl and benzyl succinimidyl carbonates for an efficient conversion of hydroxyamino acids and their esters into the corresponding N-trichloroethoxycarbonyl and benzyloxycarbonyl derivatives is described.
9-氟基甲基琥珀酰亚胺基、五氯苯基和苯并三唑-1-基碳酸酯被制备,并与L-丝氨酸和L-丝氨酸苄酯的反应性进行了比较。最有效的试剂,9-氟基甲基琥珀酰亚胺基碳酸酯,被用于高产率制备其他羟基氨基酸和羟基氨基酸酯的9-氟基甲氧羰基衍生物。描述了三氯乙基和苄基琥珀酰亚胺基碳酸酯的使用,用于将羟基氨基酸及其酯有效转化为相应的N-三氯乙氧羰基和苄氧羰基衍生物。