申请人:F. HOFFMANN-LA ROCHE & CO.
Aktiengesellschaft
公开号:EP0006208A1
公开(公告)日:1980-01-09
The invention relates to a process for the preparation of carbazoles of the formula
wherein X is hydroxymethyl or a grouping COOR1, R1 is hydrogen or lower alkyl, and the dotted line denotes an optional C-C bond, and, where X is carboxy, salts thereof with bases, starting from 6-chloro-1,2,3,4-tetrahydro- carbazole-2-one, as well as to the novel carbazoles of formula
wherein X is as above, and to the intermediate, 6-chloro-1.2,3,4-tetrahydro- carbezole-2-one.
本发明涉及以 6-氯-1,2,3,4-四氢-咔唑-2-酮为起点,制备式中 X 为羟甲基或基团 COOR1,R1 为氢或低级烷基,虚线表示任选的 C-C 键的咔唑类化合物,以及式中 X 为羧基的咔唑类化合物及其碱式盐的工艺,以及式中 X 如上的新型咔唑类化合物和中间体 6-氯-1.2,3,4-四氢-咔唑-2-酮。