[Attempted cyclization of 5-substituted-2-(5-carboxymethyl-2-methoxyphenoxy)-4-methoxyphenylacetic acid with polyphosphoris acid (studies on the synthesis of heterocyclic compounds. CCXLII].
D000085:Acetates; D055598:Chemical Phenomena; D002621:Chemistry; D010756:Phosphoric Acids
D000085:Acetates; D010756:Phosphoric Acids