Dimethylformamide → 1-(4-Chlorobenzyl)-3-chloromethyl-3-methyl-2-oxo-cyclopentancarboxylic acid methyl ester

Participants

Reaction Conditions

Reaction Steps

To 8.79 g of Compound 2-1 obtained in Production Example 1, 3.04 ml of thionyl chloride and 0.15 ml of DMF were added. The resulting mixture was stirred in an oil bath of 90° C. for 2.5 hours. After the reaction, water was added to the reaction solution thus obtained, and extraction with toluene was carried out. The organic layer thus extracted was washed with a saturated aqueous solution of sodium carbonate and saturated brine and then dried over anhydrous sodium sulfate. The solvent was distilled away, and the residue was then purified by silica gel column chromatography to obtain 6.57 g of Compound 3-1-3.

Provenance & Evidence