反应详情

To a stirred suspension of 2.0221 g. (8.560 mM) of 8-methoxy-1-oxo-1H-2-benzothiopyran-3-carboxylic acid in 50 ml. of distilled water is added 0.7191 g. (8.560 mM) of sodium bicarbonate. The solid dissolves fairly rapidly and after stirring at 25° for 1 hour the solution is filtered and the filtrate freeze-dried to give sodium 8-methoxy-1-oxo-1H-2-benzothiopyran-3-carboxylate as a yellow solid, m.p. 307° (dec.).

1. additionTo a stirred suspension of 2.0221 g
2. dissolutionThe solid dissolves fairly rapidly
3. filtrationis filtered
4. customthe filtrate freeze-dried