Diazomethane → HCID 131710116, compound

Participants

Reaction Steps

214 mg (0.93 mmole) of cis-3-(1,3-dithian-2-yl)-4-cyclopentene-2-carboxylic acid (as prepared in example 4) are dissolved in 3 ml. of dried methanol. To the cooled mixture (0° C), there is added an ethereal solution of diazomethane up to persistente yellow colour. The solution is stirred for 3 hours at room temperature, the solvent is evaporated under reduced pressure and the oily residue is purified by column chromatography (eluant C6H6 /CH3CO2C2H5 : 80/20) to yield cis-methyl-3-(1,3-dithian-2-yl)-4-cyclopentene-2-carboxylate.

Provenance & Evidence