9－甲基－1，2，3，9－四氢－4H－咔唑－4－酮的合成

SYNTHESIS OF 9-METHYL-1,2,3,9-TETRAHYDRO-4H-CARBAZOL-4-ONE

以间苯二酚为起始原料，经催化氢化得１，３－环己二酮，与Ｎ－甲基－Ｎ－苯肼反应形成单踪，再用ＰＰＡ环合制得标题化合物。三步总收率为４６．６％。

Abstract Methyl-1,2,3,9-tetrabydro-4H-car-bazol-4-one was synthesized starting from re-sorcinol by catalytic reduction with Raney Ni,condensation with N-methyl-N-phenylhy-drazine, cyclization with PPA. The overallyield of three steps was 46.6%.