名称:
                                Synthesis of 3-vinyl-1,2,4-trioxolanes by a [3 + 2] cycloaddition of carbonyl oxides with .alpha.,.beta.-unsaturated carbonyl compounds
                             
                            
                                摘要:
                                The [3 + 2] cycloaddition of a carbonyl oxide, generated by the ozonolysis of a vinyl ether, to an alpha,beta-unsaturated aldehyde gave the 3-vinyl-1,2,4-trioxolane (alpha-vinyl ozonide) in moderate yield.  In contrast, alpha,beta-unsaturated ketones showed a very poor reactivity with carbonyl oxides.  Benzylidenecyclohexanones were exceptions, from which the corresponding 3-vinyl-1,2,4-trioxolanes were obtained in excellent yields.  Reaction of the 3-vinyl-1,2,4-trioxolanes with ozone led to the formation of the corresponding diozonides.