Unexpected Conversion of 4-Oxo-4H-Chromene-2-Carboxylic Acid to 2-(1,3-Benzothiazol-2-Yl)-4H-Chromen-4-One and Spiro[1,4-Benzothiazine-2,2 '-Chromene]-3,4 '(3 ' H,4H)-Dione
AuthID
P-00W-38W
P-00W-38W