A One Pot Synthesis of 5-Phenyl-1,3-Dioxane-4,6-Dione Derivatives
摘要:
A general procedure for synthesis of 5-phenyl-1,3-dioxane-4,6-dione derivatives is described. The synthesis involves the cycloaddition of (alpha - chlorocarbonyl)phenylketene with carbonyl compounds to generate the corresponding substituted 2-oxetanone's which is readily transformed to the final products in one step. The 1,3-dioxane-4,6-dione is a rigid cyclic structure, and can undergo easy hydrolysis.
A One Pot Synthesis of 5-Phenyl-1,3-Dioxane-4,6-Dione Derivatives
作者:K. Saidi、H. R. Shaterian、H. Sheibani
DOI:10.1080/00397910008086875
日期:2000.7
A general procedure for synthesis of 5-phenyl-1,3-dioxane-4,6-dione derivatives is described. The synthesis involves the cycloaddition of (alpha - chlorocarbonyl)phenylketene with carbonyl compounds to generate the corresponding substituted 2-oxetanone's which is readily transformed to the final products in one step. The 1,3-dioxane-4,6-dione is a rigid cyclic structure, and can undergo easy hydrolysis.
An Efficient Method for Generation of α-Oxoketenes: Cycloreversion of Enolized Meldrum's Acid Derivatives
作者:Masayuki Sato、Hitoshi Ban、Chikara Kaneko
DOI:10.1016/s0040-4039(97)01566-9
日期:1997.9
synthesized from Meldrum'sacids. These dioxinones underwent 4+2 cycloreversion to methoxy- or siloxycarbonylketenes and ketones quantitatively at 20–50 °C. The ketenes were characterized by IR spectroscopy as well as by trapping with t-butanol. The ready cycloreversion of these enolized Meldrum'sacid derivatives strongly indicates that the anomalouslyhigh susceptibility of Meldrum'sacids to nucleophilic