Sodium Bicarbonate → sodium 8-methoxy-1-oxo-1H-2-benzothiopyran-3-carboxylate
Reaktionsgleichung
[CH3:1][O:2][C:3]1[C:12]2[C:11](=[O:13])[S:10][C:9]([C:14]([OH:16])=[O:15])=[CH:8][C:7]=2[CH:6]=[CH:5][CH:4]=1.C(=O)(O)[O-].[Na+:21]>O>[CH3:1][O:2][C:3]1[C:12]2[C:11](=[O:13])[S:10][C:9]([C:14]([O-:16])=[O:15])=[CH:8][C:7]=2[CH:6]=[CH:5][CH:4]=1.[Na+:21]Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
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.).