Helvetica Chimica Acta p. 1119 - 1126 (1991)
Update date:2022-08-04
Topics:
Fischer, Walter
By aromatic nucleophilic substitution followed by intramolecular acylation, 9-oxo-9H-thioxanthene- and 9-oxo-9H-xanthene-dicarboximides were prepared from nitro- or chlorophthalimides and the dianions of thiosalicylic and salicylic acids (Scheme).The 9-ox
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