Journal
ADVANCED SYNTHESIS & CATALYSIS
Volume 352, Issue 7, Pages 1163-1168Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adsc.201000005
Keywords
alkynes; copper; cyclization; dihydrofurans; furans
Categories
Funding
- MOST [2009CB626604]
- NSFC [20772051, 20972058]
- MOE of PR. China
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A simple and convenient synthetic approach to dihydrofurans has been developed from the cyclization of 2-propynyl-1,3-dicarbonyl compounds catalyzed by potassium tert-butoxide, copper(II) trifluoromethanesulfonate and triphenylphosphine using methanol/dichloromethane as the solvent under very mild conditions. Moreover, dihydrofurans could be easily transformed into the corresponding furans in the presence of trifluoroacetic acid.
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