Sodium Bicarbonate → sodium 8-methoxy-1-oxo-1H-2-benzothiopyran-3-carboxylate

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Reaction Steps

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.).

Provenance & Evidence