3-(PIPERIDINY)-AND-3(PYRROLIDINY)-H INDAZOLES AND PROCESSES FOR THE PREPARATION THEREOF

摘要

Title compds. (I)[R=H, lower alkyl, alkenyl, cycloalkyl, CN, cyanomethyl, formul, lower alkanoyl , useful as an anodyne, are prepd. Thus, 47 g phenyl chloroformate is added to a mixt. contg. 68.7 g K2CO3 and 57.5 g 4-(2-fluorobenzoyl)-1-methyl-piperidine in 750 ml to luene and refluxed for 5 h to 48.6 g 1-penoxycarbonyl-4(2- fluorobenzoyl)piperidine.