5088-53-9Relevant articles and documents
A High-Yield Regiospecific Synthesis of Keto Oximes from Aryl-Conjugated Ethylenes and Ethyl Nitrite in the Presence of Cobalt Complex and BH4- Ion
Okamoto, Tadashi,Kobayashi, Kenji,Oka, Shinzaburo,Tanimoto, Shigeo
, p. 4897 - 4901 (2007/10/02)
The title reaction of substituted styrenes, 1-phenyl-1,3-butadiene, and some cyclic aryl-conjugated ethylenes proceeds smoothly at room temperature, affording the corresponding oximes in moderate to nearly quantitative yields.The reaction mechanism is discussed on the basis of the formation of an alkylcobalt intermediate and its subsequent reaction with ethyl nitrite.
Cobalt-Catalyzed Reaction of Nitric Oxide with Aryl-Substituted Olefins in the Presence of Tetrahydroborate Ion
Okamoto, Tadashi,Kobayashi, Kenji,Oka, Shinzaburo,Tanimoto, Shigeo
, p. 5089 - 5092 (2007/10/02)
A new transition-metal-catalyzed reaction of nitric oxide with aryl-substituted olefins in the presence of BH4- has been reported, where the oximes of alkyl aryl ketones are the products.The most successful results were obtained by using styrene and its ring-substituted derivatives as the substrate and Co(DH)2(py)Cl as the catalyst.A process involving the intermediate formation of a metal-alkyl complexes and its subsequent decomposition alkyl radical followed by the reaction of the radical with NO was proposed as the reaction mechanism in relation to the already reported cobalt-catalyzed oxygenation of aryl-substituted olefins.
