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公开(公告)号:US20080039640A1
公开(公告)日:2008-02-14
申请号:US11835784
申请日:2007-08-08
IPC分类号: C07D311/02 , C07D405/04
CPC分类号: C07D311/24 , C07D311/22 , C07D405/04
摘要: A process for the preparation of a compound of formula (I) or a salt thereof wherein R is an amino, nitro or —NHCOR1 group, wherein R1 is C1-C6 alkyl or phenyl optionally substituted by a —O—(CH2)n-phenyl group, wherein n is an integer of 1 to 6; comprising reacting a compound of formula (II) or a salt thereof, both as the individual isomer and as an isomeric mixture, wherein R is as defined above; with a dehydrating agent, if necessary in the presence of an organic solvent, and optionally in the presence of a basic agent; and, if desired, converting a compound of formula (I) to another compound of formula (I) or a salt thereof.
摘要翻译: 一种制备式(I)化合物或其盐的方法,其中R是氨基,硝基或-NHCOR 1个基团,其中R 1是C < 任选被-O-(CH 2)n - 亚苯基取代的C 1 -C 6烷基或苯基, 其中n为1至6的整数; 包括使式(II)化合物或其盐作为单独的异构体和异构体混合物反应,其中R如上定义; 如果需要,在有机溶剂的存在下,任选地在碱性试剂的存在下,使用脱水剂; 如果需要,将式(I)化合物转化为另一种式(I)化合物或其盐。