期刊
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
卷 -, 期 -, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejoc.202300810
关键词
1,4-Enediones; Cyanamide; Polysubstituted furans; Bicyclization; Synthesis
A DABCO-promoted bicyclization/rearrangement reaction has been developed for the synthesis of tetrasubstituted furans from 1,4-enediones at room temperature. This transformation involves aza-Michael addition, intramolecular bicyclization, and rearrangement processes. In addition, the 4-ureidofuran-3-carboxylate ester products can further be converted to furo[3,4-d]pyrimidine-2,4-diones through intramolecular substitution cyclization under heating conditions.
A DABCO-promoted bicyclization/rearrangement reaction has been developed for the synthesis of tetrasubstituted furans from 1,4-enediones at room temperature. This transformation involves aza-Michael addition, intramolecular bicyclization, and rearrangement processes. In addition, the 4-ureidofuran-3-carboxylate ester products can further be converted to furo[3,4-d]pyrimidine-2,4-diones through intramolecular substitution cyclization under heating conditions.
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