期刊
SYNTHESIS-STUTTGART
卷 -, 期 2, 页码 190-196出版社
GEORG THIEME VERLAG KG
DOI: 10.1055/s-2006-958955
关键词
multicomponent reaction; bismuth(III) oxychloride; bismuth(III) chloride; catalysis; beta'-acetamido-beta-dicarbonyl compounds; diastereoselectivity
Bismuth(111) chloride generated in situ from the procatalyst bismuth(Ill) oxychloride and acetyl chloride efficiently catalyzes the one-pot synthesis of beta-acetamido-beta-dicarbonyl compounds from aldehydes, enolizable beta-diketones, or beta-oxo esters and acetyl chloride in acetonitrile solution and under solvent-free conditions at room temperature; in the case of the beta-oxo ester derived products, these are obtained with moderate to excellent diastereoselectivity in favor of the pref-isomer. X-ray crystallographic analysis of one pref-beta-acetamido-beta-oxo ester exhibits C-H center dot center dot center dot O and N-H center dot center dot center dot O intermolecular interactions in the three-dimensional supramolecular assembly.
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