Diazomethane → HCID 20531244, compound

Participants

Reaction Steps

An ethereal solution of diazomethane is added in portions to a solution of 2-methyl-5-benzo(b)furanylglyoxylic acid in dry ethyl ether until the yellow color of diazomethane persists. The resulting mixture is stirred five minutes and a few drops of ethereal acetic acid added to consume the excess reagent. The ether solution is washed with water, dilute sodium bicarbonate solution, water again and dried over anhydrous magnesium sulfate. The ether is evaporated to obtain methyl 2-methyl-5-benzo(b)furanylglyoxylate.

Provenance & Evidence