反应详情

To 8.00 g of 2-cyclopentylmethyl-1-(1-ethyl-propyl)-1H-benzoimidazole-5-carboxylic acid in 100 ml of dichloromethane 0.1 ml of DMF and 4 ml of oxalyl chloride were added. The reaction was stirred at it for 16 h, then concentrated and co-distilled with toluene to obtain 8.45 g (100%) of the crude product as a brown solid, which was used without further purification.

1. concentrationconcentrated