| 摘要 |
Novel compounds of the formula <IMAGE> in which R is hydrogen, acetyl or propionyl and Q is acetyl or R is hydrogen and Q is C(H,CH3)OC(O)R<2> or C(CN,CH3)OSi(R<3>,R<4>,R<5>), in which R<2> is hydrogen, C1-10-alkyl, C2-10-alkenyl, C4-7-cycloalkyl, aryl or a 5- or 6-membered heterocyclic group, and R<3>, R<4> and R<5> are straight-chain C1-4-alkyl groups, their preparation from 2-acetylcarbazoles and their use for preparing 6-chloro- alpha -methylcarbazole-2-acetic acid. |
