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DABCO-Catalyzed Reaction of α-Halo Carbonyl Compounds with Dimethyl Acetylenedicarboxylate:  A Novel Method for the Preparation of Polysubstituted Furans and Highly Functionalized 2H-Pyrans

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posted on 30.09.2005 by Mingjin Fan, Zeyi Yan, Weimin Liu, Yongmin Liang
Polysubstituted furans and highly functionalized 2H-pyrans were prepared in good yields by DABCO-catalyzed reactions of α-halo carbonyl compounds with dimethyl acetylenedicarboxylate (DMAD) at room temperature.