Cyclopentanecarbonyl chloride → HCID 59576360, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of cyclopentanecarbonyl chloride and aluminum chloride in dry DCM were stirred in an inert atmosphere at 0-5° C. for 15 minutes. To this, a solution of 1H-pyrrole-2-carboxylic acid ethyl ester in dry DCM was added drop wise under stirring at 0-5° C., stirred further at room temperature for 4 hrs. After completion of reaction, the reaction mixture was poured into ice water and extracted with DCM, DCM layer was washed with 1N NaOH followed by water and brine. The organic layer was dried over anhydrous sodium sulfate and was evaporated to get 4-Cyclopentanecarbonyl-1-H-pyrrole-2-carboxylic acid ethyl ester (A1-I).

Provenance & Evidence