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In(III)/PhCO2H binary acid catalyzed tandem [2 + 2] cycloaddition and Nazarov reaction between alkynes and acetals

, : In(III)/PhCO2H binary acid catalyzed tandem [2 + 2] cycloaddition and Nazarov reaction between alkynes and acetals. Organic Letters 15(17): 4496-4499

A facile tandem [2 + 2] cycloaddition and Nazarov reaction has been developed. The combination of In(OTf)3 and benzoic acid was found to synergistically promote the coupling of alkynes and acetals to form 2,3-disubstituted indanones in excellent yield and diastereoselectivity.


PMID: 23947688

DOI: 10.1021/ol4020464

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