Citral, cinnamaldehyde, heliotropin, citronellal, φ-ionone, α-ionone, β-ionone, benzalacetone, carvone, and pulegone were treated with vinyl magnesium chloride. The products were mainly the corresponding vinyl carbinols, normal adducts of the Grignard reagent to the starting compounds.
Disperse dyes were synthesized from 1, 2, 3, 4-tetrachloroanthraquinone. They showed good dyeing properties for Tetoron through high pressure dyeing treatment, although their properties for Acetate were not satisfactory. The dyes containing aryl group showed sun-fastness of 6 grade or above and sublimation-fastness of 4-5 grade. Even the dyes without aryl group showed improved fastness against sunlight, abrasion, washing, and sublimation over the corresponding 1, 4-disubstituted anthraquinones.
Disperse dyes of general formula 1-amino-4-R-6, 7-dichloroanthraquinone (R-:H-, Cl-, HO-, H2N-, n-C4H9-NH-, -NH-, -NH-, CH3- NH-) were synthesized from 2, 3-dichloroanthraquinone. They showed good dyeing properties for Tetoron, although their properties for Acetate were not satisfactory. The colors vary from orange to blue. The maximum absorption peak shifts considerably to the longer wave length side from that of the corresponding 1, 4-disubstituted anthraquinones. The fastness against sunlight and sublimation has also been improved by one grade. Their abrasion and wash fastness was of 5 grade.
Benzoyl peroxide was decomposed in 1, 2-dichloroethane, 1, 1, 2-trichloroethane, and 1, 1, 2, 2-tetrachloroethane, and the reaction products were analyzed. In all cases, carbon dioxide and benzoic acid were identified and no chlorobenzene was detected. This indicates that the phenyl radical produced upon decomposition of the Benzoyl peroxide can abstract the hydrogen atom from chloroalkanes, but not the chlorine atom. The evolution of hydrogen chloride was always noted. The products identi-fied were 1, 2, 3, 4-tetrachloroeutane, vinyl chloride, and 1, 1, 2-trichloroethane from 1, 2-dichloroethane ; 1, 2, 2, 3, 3, 4-hexachlorobutane and 1, 2-dichloroethylene from 1, 1, 2-trichloroethane ; 1, 1, 2, 2, 3, 3, 4, 4-octachlorobutane and pentachloroethane from 1, 1, 2, 2-tetrachloroethane. Probable reaction paths have been proposed for the β-chloroalkyl radicals formed upon hydrogen abstraction from chloroalkanes. They are β-scission, dimerization, and disproportionation involving the transfer of chlorine atom.ClCR2-CR2 Cl + CR2=CR2(β-scission)2ClCR2-CR2 (Cl-R2-CR2-)2 (dimerization)2ClCR2-CR2 ClCR2-CR2Cl+CR2=CR2(disproportionation)Disproportionation involving the transfer of hydrogen atom does not play a major role.