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ChemInform Abstract: Reactions of 3-(1-Hydroxyalkyl)phthalides with Acids: Synthesis of (Z)-3-Alkylidenephthalides and 3-Alkyl-8-hydroxyisocoumarins.

✍ Scribed by R. S. MALI; K. N. BABU

Book ID: 101865626
Publisher: John Wiley and Sons
Year: 2010
Weight: 37 KB
Volume: 29
Category: Article
ISSN: 0931-7597
DOI: 10.1002/chin.199834165

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✦ Synopsis

Reactions of 3-(1-Hydroxyalkyl)phthalides with Acids: Synthesis of (Z)-3-Alkylidenephthalides and 3-Alkyl-8-hydroxyisocoumarins.

-A new ring expansion reaction of phthalides to give isocoumarins with different substitution patterns is reported.

(Z)-Butylidenephthalides (IX) are synthesized by acidic treatment of phthalides (VIII). In some cases an unprecedent demethylation with TosOH is observed. -(MALI, R. S.; BABU,

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