83490-15-7Relevant articles and documents
Acetalization of α,β-unsaturated carbonyl compounds catalyzed by complexes of Pt(II)
Nieddu, Enrico,Cataldo, Maurizio,Pinna, Francesco,Strukul, Giorgio
, p. 6987 - 6990 (2007/10/03)
A class of cationic diphosphine complexes of Pt(II) are sufficiently Lewis acidic to catalyze the acetalization of aldehydes and ketones. α,β-Unsaturated substrates can be easily acetalized with ethylene glycol under mild conditions in high yield and avoiding side reactions leading to formation of undesired by-products arising from the nucleophilic addition to the carbon-carbon double bond conjugated to the carbonyl group. A comparison of the behavior of a Pt complex with respect to PTSA as catalysts under identical conditions shows the superior selectivity of the former in many cases.
Acetals and Ethers. XII. Reaction Products of Prop-2-enal with 1,2- and 1,3-Diols
Piasecki, Andrzej,Burczyk, Bogdan
, p. 543 - 554 (2007/10/02)
2-(Hydroxyalkoxyethyl)-substituted cyclic acetals (1; 2; 3a - 3d; 4a - 4d), derivatives of 1,3-dioxolane or 1,3-dioxane have been obtained in a p-toluenesulphonic acid-catalysed reaction of prop-2-enal with an excess of ethylene, propylene-1,2, trimethylene, or butylene-1,3 glycol.Respective 2-vinyl-1,3-dioxolanes or 2-vinyl-1,3-dioxanes were the intermediate products.The products of the reaction involving propylene-1,2 and butylene-1,3 glycols were mixtures of cis- and trans-2,4-disubstituted-1,3-dioxolanes and cis- and trans-2,4-disubstituted-1,3-dioxanes.The structure of HOROCH2CH2- substituents at C-2 atom of 1,3-dioxacyclane ring has been proved through 2,4-dinitrophenylhydrazone derivatives of the corresponding aldehydes HOROCH2CH2CHO that, however, could not be isolated as individual compounds.