反应详情

A procedure similar to that described in Preparation 15 was repeated, except that 5.00 g of 2-hydroxymethyl-7-methyl-3H-imidazo[5,4-b]pyridine, 1.34 g of sodium hydride (as a 55% by weight dispersion in mineral oil), 2.0 ml of methyl iodide and 120 ml of dimethylformamide were used, to give the title compound as a crude product. This crude product was purified by column chromatography through silica gel, using a gradient elution method, with mixtures of ethyl acetate and methanol in ratios ranging from 1:0 to 10:1 by volume as the eluent, to give 4.4 g of the title compound, melting at >300° C.

1. customA procedure similar to that described in Preparation 15