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    • 13. 发明授权
    • Process for optical resolution of crude trans-1,2-cyclohexanediamine
    • 粗反式-1,2-环己二胺的光学拆分方法
    • US4085138A
    • 1978-04-18
    • US711138
    • 1976-08-03
    • Thomas A. Whitney
    • Thomas A. Whitney
    • C07C87/38C07C87/40
    • C07C51/367
    • Crude trans-1,2-cyclohexanediamine (DACH) contained in a mixture of amines derived as a by-product from the manufacture of 1,6-hexanediamine (HDA) or any other synthesis process crude by-product stream may be directly resolved into its optical isomers by using a mixture of tartaric acid and a second acid selected from the group consisting of C.sub.1 to C.sub.8 carboxylic acids and HCl, without first separating the DACH in high purity from the mixed amine component by-product stream. Alternatively, racemic DACH may be separated from a crude mixed amine component by-product stream by use of oxalic, sulfuric and/or nitric acids. This racemic product may then be optically resolved by techniques known in the art.
    • 衍生自制备1,6-己二胺(HDA)或任何其他合成方法粗副产物流的副产物的胺混合物中所含的粗反式1,2-环己烷二胺(DACH)可直接分解为 其光学异构体通过使用酒石酸和选自C1至C8羧酸和HCl的第二种酸的混合物,而不首先将高纯度的DACH与混合的胺组分副产物流分离。 或者,外消旋DACH可以通过使用草酸,硫酸和/或硝酸与粗混合胺组分副产物流分离。 然后可以通过本领域已知的技术光学拆分外消旋产物。