SCHEDULED MAINTENANCE:
Condensations of 4,4′-dichlorobenzophenone with diethyl succinate and dimethyl methylsuccinate give 3-alkoxycarbonylbut-3-enoic acids, which have been converted into 1-(p-chlorophenyl)naphthalene-2-carboxylic acids, 3-(p-chlorophenyl)-1-oxoindene-2-acetic acids and benzo[c]fluorenones. A pyridazinone derivative has also been obtained.
M. Gindy, V. B. Baghos and A. M. Shaban, J. Chem. Soc. C, 1970, 1905 DOI: 10.1039/J39700001905
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