1175095-87-0Relevant articles and documents
Furans versus 4H-pyrans: Catalyst-controlled regiodivergent tandem Michael addition-cyclization reaction of 2-(1-alkynyl)-2-alken-1-ones with 1,3-dicarbonyl compounds
Xiao, Yuanjing,Zhang, Junliang
supporting information; experimental part, p. 3594 - 3596 (2009/12/03)
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.