Sodium Methoxide → HCID 14032654, compound

Participants

Reaction Steps

A mixture of 4-(1-phenyl-1H-indazol-3-yl)piperidine-1-carbonitrile of Example 73 (4.0 g, 0.013 moles) and sodium methoxide (3 ml of 25% sodium methoxide in methanol, 0.013 moles) in methanol (30 ml) was warmed to effect solution and then stirred at ambient temperature for 16 hours. The solvent was removed which left an oil (4.5 g). The oil was dissolved in ether, washed with H2O, and dried (MgSO4). Removal of the ether left an oil which began to crystallize upon standing. Crystallization was enhanced by triturating the oil with hexane which produced 3.5 g of product. The product was recrystallized twice from hexane yielding 2.31 g (52%) of 4-(1-phenyl-1H-indazol-3-yl)piperidine-1-carboximidic acid methyl ester, mp 80°-83° C.

Provenance & Evidence