Water → HCID 59576363, compound

Participants

Reaction Steps

A mixture of 4-cyclopentylmethyl-1H-pyrrole-2-carboxylic acid ethyl ester (A1-II) and cesium carbonate were stirred in dry DMF for 10 minutes at 40-50° C. To it 1-bromomethyl-2,4-difluorobenzene was added and the reaction was stirred for 18 hrs. at 50° C. Water was added to the reaction and extracted with ethyl acetate. The organic layer was washed with brine and dried over anhydrous sodium sulfate. The solvent was evaporated to obtain 4-cyclopentylmethyl-1-(2,4-difluorobenzyl)-1H-pyrrole-2-carboxylic acid ethyl ester (A1-III).

Provenance & Evidence