Hydrogen Bromide → HCID 14032592, compound

Participants

Reaction Steps

To a stirred suspension of 0.86 g of sodium hydride (50% oil dispension) in 50 ml of dimethylformamide under nitrogen, was added, dropwise, 3.0 g of 3-(1-methyl-4-piperidinyl)-1H-indazole dissolved in 15 ml of hot dimethylformamide. After stirring one hr at ambient temperature, 2.6 g of benzyl bromide in 5 ml of dimethylformamide was added. The reaction mixture was stirred at ambient temperature for 15 hrs. and then poured into water. The aqueous mixture was extracted with ethyl acetate. The ethyl acetate extract was washed with water, brine and dried over anhydrous magnesium sulfate. The ethyl acetate was evaporated in vacuo to yield an oil. The oil was dissolved in ether and gaseous hydrogen bromide was passed through the solution to yield an oily material. The oily material was triturated with boiling ethyl acetate. The solid was collected and recrystallized from absolute ethanol to yield 2.4 g (44.3%) of product, mp 218°-220° C.

Provenance & Evidence