Process for the preparation of carbazoles and novel carbazole derivatives utilized therein
申请人:F. HOFFMANN-LA ROCHE & CO.
Aktiengesellschaft
公开号:EP0008446B1
公开(公告)日:1982-09-22
US4158007A
申请人:——
公开号:US4158007A
公开(公告)日:1979-06-12
US4193923A
申请人:——
公开号:US4193923A
公开(公告)日:1980-03-18
US4226774A
申请人:——
公开号:US4226774A
公开(公告)日:1980-10-07
Carbazole methyl malonates
申请人:Hoffmann-La Roche Inc.
公开号:US04158007A1
公开(公告)日:1979-06-12
A process for the preparation of .alpha.-methyl-carbazole-2-acetic acids, which comprises reacting an .alpha.-methyl-3-oxocyclohexane malonic acid di-lower alkyl ester with a substituted phenylhydrazine, and thereafter sequentially oxidizing and hydrolyzing the reaction product to obtain the desired acid, is described.