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. 2011 Jan 14;47(2):794-6.
doi: 10.1039/c0cc04283h. Epub 2010 Nov 26.

TfOH-catalyzed tandem cyclopropane ring enlargement/C-C formation/etherification of alkynylcyclopropanes and 1,3-diketones to cyclobutane-fused dihydrofurans

Siyu Ye  1 , Zhi-Xiang Yu
Affiliations

TfOH-catalyzed tandem cyclopropane ring enlargement/C-C formation/etherification of alkynylcyclopropanes and 1,3-diketones to cyclobutane-fused dihydrofurans

Siyu Ye et al. Chem Commun (Camb). .

Abstract

A new type of TfOH-catalyzed tandem cyclopropane ring enlargement/C-C formation/etherification reaction between alkynylcyclopropanes and 1,3-diketones to cyclobutane-fused dihydrofurans is described. The reaction tolerates a range of aryl and alkyl substituents with moderate to good yields.

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