Journal
JOURNAL OF ORGANIC CHEMISTRY
Volume 87, Issue 5, Pages 3712-3717Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.joc.1c02647
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Funding
- Croatian Science Foundation [IP-2018-01-4053]
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The construction of spiroisoindolinone indenes through a Bronsted acid-catalyzed reaction between iso-indolinone-derived propargylic alcohols and external aromatic nucleophiles is described. The reaction offers a modular approach for the synthesis of target compounds through an intercepted Meyer-Schuster rearrangement/intramolecular Friedel-Crafts alkylation relay, providing spiroindenes with good chemoselectivity and regioselectivity in moderate to high yields.
A Bronsted acid-catalyzed reaction between iso-indolinone-derived propargylic alcohols and external aromatic nucleophiles for the construction of spiroisoindolinone indenes is described. The reaction proceeds rapidly with a broad range of substrates to generate spiroindenes chemoselectively and regioselectively in moderate to high yields. Key to the success of this transformation is an intercepted Meyer-Schuster rearrangement/intramolecular Friedel-Crafts alkylation relay that offers a modular approach in the synthesis of target compounds.
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