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- ISSN: 1570-1786
- E-ISSN: 1875-6255
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A Novel Unusual Isocoumarin Derivative, 3H-Furo[3,4-c]isochromene-1,5- dione
- Source: Letters in Organic Chemistry, Volume 7, Issue 7, Oct 2010, p. 557 - 560
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- 01 Oct 2010
Abstract
An attempt to prepare 3-substituted isocoumarins by the condensation of acid chlorides with homophthalic acid to afford the desired 3-chloromethylisocoumarin was made but surprisingly the desired isocoumarin (8) was not formed. However, a novel 3H-furo[3,4-c]isochromene-1,5-dione (9) was isolated which was characterized by spectroscopy and Xray crystallography. A mechanism for the formation of 3H-furo[3,4-c]isochromene-1,5-dione (9) is also proposed.
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