Methanesulfonyl chloride → 3,9-Dimethyl-2-[(4-methyl-1-piperazinyl)methyl]-9H-dibenz[b,f]imidazo[1,2-d][1,4]diazepine

Participants

Reaction Conditions

Reaction Steps

A sampmle of 3,9-dimethyl-2-hydroxymethyl-9H-dibenzo[b,f]-imidazo[1,2-d] [1,4]diazepine is suspended in a chloroform/tetrahydrofuran mixture and treated with triethylamine. After cooling to -20° C. methanesulfonyl chloride is added with stirring at -20° C. The mixture is treated with 4-methylpiperazine and warmed gradually to room temperature. Work-up from an aqueous base followed by the usal purification techniques affords the product 3,9-dimethyl-2-(4-methyl-1-piperazinyl)methyl-9H-dibenz[b,f]-imidazo[1,2-d][1,4]diazepine as a yellow oil.

Provenance & Evidence