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Synthesis of indenoindene-fused α-methylene-γ-butyrolactones via a tandem intra- and intermolecular Friedel–Crafts reaction

✍ Scribed by Bo Ram Park; Se Hee Kim; Yu Mi Kim; Jae Nyoung Kim

Publisher: Elsevier Science
Year: 2011
Tongue: French
Weight: 564 KB
Volume: 52
Category: Article
ISSN: 0040-4039
DOI: 10.1016/j.tetlet.2011.01.153

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✦ Synopsis

An efficient synthesis of indenoindene-fused a-methylene-c-butyrolactones was carried out via a tandem intra-and intermolecular Friedel-Crafts reaction from the spiro-lactone, which can be easily prepared from ninhydrin by indium-mediated Barbier reaction of cinnamyl bromide.

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