α-Halogenoketones—XIV: Studies in the chemistry of 2''-hydroxyacrylophenones |
| |
Authors: | J. A. Donnelly D. E. Maloney |
| |
Affiliation: | J. A. Donnelly*,D. E. Maloney |
| |
Abstract: | The chromone epoxide ring system has been synthesised. Base-catalysed cyclization and dehydrobromination of α-bromo-o-acyl (aroyl) oxyacetopheones or 2-bromo-1, 3-diones yielded 3-substituted chromone epoxides. Acid-catalysed rearrangement of a 2-methylchromone epoxide in an aprotic solvent gave a 2-methylenech-romanonol, while a 3-methoxymethylchromone epoxide fragmented to chromonol under these conditions; in alchols, chromone epoxides gave 2-alkoxychromanonols. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |