Hydrochloric Acid → 4-Methoxy-3-(morpholine-4-sulfonyl)benzoic acid

Participants

Reaction Conditions

Reaction Steps

To methyl 4-methoxy-3-(morpholinosulfonyl)benzoate 41 (0.970 g, 3.08 mmol) was added NaOH (0.599 g, 15.0 mmol) (15 mL, 1 M in water) followed by methanol (10 mL). The reaction mixture was heated to 60° C. for 2 h and acidified with 1 M HCl. The organic phase was extracted with EtOAc (5×) and the combined extracts were washed with brine (1×), dried over MgSO4, filtered, and concentrated to yield 4-methoxy-3-(morpholinosulfonyl)benzoic acid 42 (0.824 g, 88.9% yield) as a white solid which was used without further purification. Mass spectrum: calculated for C12H15NO6S 301.1. found 302.1 (M++1).

Provenance & Evidence