期刊
MONATSHEFTE FUR CHEMIE
卷 136, 期 5, 页码 727-731出版社
SPRINGER WIEN
DOI: 10.1007/s00706-004-0270-y
关键词
ionic liquid; catalysts; guanidine; cyclization; one-pot; 4H-pyrans
A clean and efficient method for the synthesis of 4H-pyran derivatives through the one-pot condensation of aromatic aldehydes, malononitriles, and beta-dicarbonyl compounds, using guanidine base tetramethylguanidine in [bmim][BF4] ionic liquid as a recyclable catalytic system, was described.
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