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V. V. Shereshovets N. M. Korotaeva F. F. Khizbullin L. M. Khalilov N. A. Mukmeneva V. D. Komissarov G. A. Tolstikov 《Russian Chemical Bulletin》1994,43(10):1663-1666
Two conformers (chair, boat) of [l-(–)-menthyl)]-[2,2-methylene-bis-(4-methyl-6-tert-butylphenyl)] phosphite ozonide have been obtained by the low temperature ozonization (–80 °C) of [l-(–)-menthyl)]-[2,2-methylene-bis-(4-methyl-6-tert-butylphenyl)] phosphite. It was determined that decomposition of the ozonide is first order with the rate constant logk
0 = (10.92±1.10)–(14.02±1.25)/gq ( = 2.303RT, kcal mol–1), leading to [l-(–)-menthyl)]-[2,2-methylene-bis-(4-methyl-6-tert-butylphenyl)] phosphate and oxygen (including singlet oxygen). Conformational transitions (chair-boat) for [l-(–)-menthyl)]-[2,2-methylene-bis-(4-methyl-6-tert-butylphenyl)] phosphate have been registered by31P NMR spectroscopy.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 10, pp. 1758–1761, October, 1994.This work was supported by Russian Foundation for Basic Research (Project No. 93-03-532l). 相似文献
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This article describes a process for the synthesis of diethyl oxalate by a copling reaction of carbon monoxide,catalyzed by palladium in the presence of ethyl nitrite ,The kinetics and mechanism of the coupling and regeneration reaction are also discussed ,This paper presents the results of a scale-up test of the catalyst and the process based on an a priori computer simulation. 相似文献
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V. L. Lobachev T. M. Prokop’eva V. A. Savelova 《Theoretical and Experimental Chemistry》2004,40(6):383-388
We have studied the effect of different surfactants on the rate of diethyl sulfide (Et2S) oxidation by hydrogen peroxide and peroxymonocarbonate (HCO
4
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) in aqueous solutions. In all the studied cases, the rate of the reaction between Et2S and H2O2 decreases as the surfactant concentration increases. The reaction of Et2S with HCO
4
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is catalyzed by cationic surfactants and inhibited by neutral and anionic surfactants.Translated from Teoreticheskaya i Éksperimentalnaya Khimiya, Vol. 40, No. 6, pp. 368–372, November–December, 2004. 相似文献
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A high yielding one-pot, novel synthesis of carbamate esters from alcohols using Mitsunobu's reagent
A novel process for the one-step conversion of primary alcohols into carbamates as protected amines has been developed using Mitsunobu's reagent in the presence of gaseous carbon dioxide. Thus, carbamate esters of the different amines were prepared in very good to excellent yields. 相似文献