Chlorosulfonic acid → HCID 23112079, compound

Participants

Reaction Steps

Chlorosulfonic acid (10 mL) was cooled to 0° C. Then compound 36A (6.80 g, 38.6 mmol) was added over 30 min. The mixture was stirred at RT for 3 h and was poured into ice (−500 g). The cloudy solution was extracted with ether (2×200 mL). The extracts were dried with magnesium sulfate and concentrated to give a brown oil which was passed through a short pad of silica gel to afford the desired product 36B (6.05 g, 57%) as white plates. MS: 239 (M−Cl)+. Step 3. Preparation of 1-(4-Mercapto-phenyl)cyclopropanecarboxylic acid methyl ester (Compound 36C)

Provenance & Evidence