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Report | Regular issue | Vol 3, No. 7, 1975, pp.571-573
Published online, 1st January, 1970
DOI: 10.3987/R-1975-07-0571
Addition of Diethyl Mesoxalate to Benzofurane-2(3H)-one, 1-Benzothiophene-2(3H)-one and 2-Indolinone

Heinz Wolfers, Udo Kraatz, and Friedhelm Korte*

*Lehrstuhl für Ökologische Chemie, Technische Universität München, Lichtenbergstrasse 4, D-85747 Garching, Germany


The condensation of a benzo-condensed lactone, thiolactone and lactam 1a-c with diethyl mesoxalate does not yield α-methylene derivatives but only hydroxy compounds 4a-c, which cannot be dehydrated further.