Ammonium Hydroxide → HCID 12519150, compound

Participants

Reaction Steps

To a stirred solution of 2.00 g of 1,2-dihydroindolo[1,7-ab][1,5]benzodiazepine in 40 ml of tetrahydrofuran, cooled under N2 to 0° C., is added dropwise 10 ml of a 2.5 molar solution of methyl magnesium bromide in ether. The reaction mixture is refluxed for 3 hours, cooled, and treated cautiously with saturated aqueous NH4OH solution. The mixture is partitioned between CH2Cl2 and water. The organic phase is separated, washed once with brine, dried over Na2SO4 and concentrated to a solid of 6-methyl-1,2,6,7-tetrahydroindolo[1,7-ab][1,5]benzodiazepine, m.p. 134°-136° C.

Provenance & Evidence