Tetrahydrofuran → HCID 118290389, compound

Participants

Reaction Steps

At room temperature, to the mixture of 5-{4-[2-Cyclopropyl-6-(4-methyl-5-oxo-4,5-dihydro-tetrazol-1-yl)-benzyloxy]-3-methyl-phenyl}-2,4-dimethyl-2H-pyrazole-3-carboxylic acid (described in Reference Preparation example 116) and tetrahydrofuran 50 ml was added oxalyl dichloride 0.5 g and N,N-dimethylformamide 0.1 ml. The mixture was stirred for two hours and concentrated under reduced pressure to give 5-{4-[2-Cyclopropyl-6-(4-methyl-5-oxo-4,5-dihydro-tetrazol-1-yl)-benzyloxy]-3-methyl-phenyl}-2,4-dim ethyl-2H-pyrazole-3-carbonylchloride 1.3 g.

Provenance & Evidence