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The synthesis of unusual isocoumarin derivatives: the chemistry of homophthalic acid

Ozcan, Sevil
Sahin, Ertan
Balcı, Metin
Homophthalic acid was reacted with thionyl chloride/DMF and ethyl chloroformate/NEt3 in the presence and absence of NaN3. In all cases completely different isocoumarin derivatives were obtained. These unusual isocournarin derivatives were characterized and their mechanism of formation is discussed.