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- W2118085686 abstract "Phenylacetylene is oxidized slowly by molecular oxygen at 110°C. The main oxidation products are benzoic acid, benzoic anhydride, and benzaldehyde. Besides the oxidation, thermal dimerization, oligomerization, and polymerization processes also take place. As individual products 1,4-diphenylbut-1-yn-3-ene and 1,3,5-triphenylbenzene were identified. About 80% of the phenylacetylene consumed are converted into products of low volatility which could not be detected by gas chromatography.The autoxidation of acetylenic hydrocarbones [1] preferably yields products of the attack at CH bonds in α-position to the CC triple bond. An attack at the CC riple bond was a first proved in the case of phenylacetylene, which besides polymeric products yielded benzaldehyde, acetophenone, and organic acids [2]. Later, in the causes of the isomeric octynes [3] and of various 1-Phenylalk-1-ynes [4] an attack at the CC triple bond was also proved. As the primary products of the oxidative attack at the CC triple bond short-lived oxirenes or their valence isomers, the corresponding ketocarbenes are to be expected. Indeed, their rearrangement products were found in the oxidation mixtures of both the isomeric ocytnes [3] and the 1-phenylalk-1-ynes [4]. Other products of the oxidative attack at the CC triple bond are lower carboxylic acids, formally produced by oxidative cleavage of the CC triple bond [3, 4]." @default.
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- W2118085686 date "1985-01-01" @default.
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- W2118085686 title "Studies on the Autoxidation of Phenylacetylene" @default.
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- W2118085686 doi "https://doi.org/10.1002/prac.19853270603" @default.
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