Furansversus 4H-pyrans: catalyst-controlled regiodivergent tandem Michael addition–cyclization reaction of 2-(1-alkynyl)-2-alken-1-ones with 1,3-dicarbonyl compounds

Literature Information

Publication Date 2009-05-11
DOI 10.1039/B905267D
Impact Factor 6.222
Authors

Yuanjing Xiao


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Abstract

The DBU-catalyzed reaction of 1-(1-alkynyl)-2-alken-1-ones with 1,3-dicarbonyl compounds produces 4H-pyrans in moderate to excellent yield, whereas the cationic Pd(II)-catalyzed reaction affords furans regioselectively.

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