Sodium Carbonate → 5,10-Dihydro-5-{[(1-methyl-4-piperidinyl)amino]carbonyl}-11H-dibenzo[b,e][1,4]diazepin-11-one

Participants

Reaction Steps

Amounts of 3.2 gm (0.012 mol) of 5-chlorocarbonyl-5,10-dihydro-11H-dibenzo[b,e][1,4]diazepin-11-one and 2.1 gm (0.02 mol) of sodium carbonate were refluxed in 100 ml of acetonitrile together with 2.3 ml (0.02 mol) of 4-amino-1-methyl-piperidine for 15 minutes under stirring. The mixture was filtered while hot, and the filtrate was purified over a silica gel column [eluant: acetonitrile; followed by methylene chloride/ethyl acetate/cyclohexane/methanol/ammonia (175:75:23:23:3)]. The desired fraction was concentrated by evaporation in vacuo, and the residue was recrystallized from 50% aqueous acetonitrile.

Provenance & Evidence