![A Lewis acid-promoted cyclization of ethenetricarboxylate derivative aromatic compounds. Novel syntheses of oxindoles and benzofuranones via Friedel?Crafts intramolecular Michael addition]()
A Lewis acid-promoted cyclization of ethenetricarboxylate derivative aromatic compounds. Novel syntheses of oxindoles and benzofuranones via Friedel?Crafts intramolecular Michael additionYamazaki, Shoko; Morikawa, Satoshi; Iwata, Yuko; Yamamoto, Machiko; Kuramoto, Kaori · Organic & Biomolecular Chemistry · 2004