会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 4. 发明授权
    • 3-Carbamoyl-3-hydroxy-4-halobutyric acid and salts thereof
    • 3-氨基甲酰基-3-羟基-4-卤代丁酸及其盐
    • US3911002A
    • 1975-10-07
    • US34782273
    • 1973-04-04
    • ETHYL CORP
    • WIEGAND KARL E
    • C07C51/04C07C51/08C07C51/41C07F1/00C07C103/167
    • C07F1/005C07C51/04C07C51/08C07C51/41C07C51/412C07C59/21C07C59/265
    • It is disclosed that citric acid or its salts are obtained by the hydrolysis of a 3-carbamoyl-3-hydroxy-4-cyanobutyric acid or salt, that a 3-carbamoyl-3-hydroxy-4-cyanobutyric acid or salt is obtained from a 3-carbamoyl-3,4-epoxybutyric acid or salt, that a 3-carbamoyl-3,4-epoxybutyric acid or salt is obtained from a 3carbamoyl-3-hydroxy-4-halobutyric acid or salt, that a 3carbamoyl-3-hydroxy-4-halobutyric acid is obtained from a 3cyano-3-hydroxy-4-halobutyric acid or salt, that a 3-cyano-3hydroxy-4-halobutyric acid or salt is obtained from a 3-oxo-4halobutyric acid or salt, that a 3-oxo-4-halobutyric acid or salt is obtained from a 3-oxo-4-halobutyryl halide, and that a 3-oxo4-halobutyryl halide is obtained from diketene. Preferred halide compounds are compounds of chlorine.
    • 公开了通过水解3-氨基甲酰基-3-羟基-4-氰基丁酸或其盐得到柠檬酸或其盐,得到3-氨基甲酰基-3-羟基-4-氰基丁酸或其盐由 3-氨基甲酰基-3,4-环氧丁酸或其盐,由3-氨基甲酰基-3-羟基-4-卤代丁酸或其盐得到3-氨基甲酰基-3,4-环氧丁酸或其盐,将3 - 氨基甲酰基-3-羟基-4-卤代丁酸得自3-氰基-3-羟基-4-卤代丁酸或其盐,得到3-氰基-3-羟基-4-卤代丁酸或其盐 3-氧代-4-卤代丁酸或其盐,由3-氧代-4-卤代丁酰卤得到3-氧代-4-卤代丁酸或其盐,得到3-氧代-4-卤代丁酰卤,由 双烯酮 优选的卤化物是氯的化合物。