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Expired
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GB14415/45A
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Visking Corp
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Visking Corp
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Publication of GB593109ApublicationCriticalpatent/GB593109A/en
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
Nitro-olefines of the formula R2R3C=C(NO2)R1 are prepared by the pyrolysis in the vapour phase of a nitroester of the formula R2R3R4C=CH(NO2)R1, together with the acid HR4. In the above formul R1, R2 and R3 are hydrogen or alkyl groups and R4 is an inorganic mineral acid radical or an acyloxy group. The pyrolysis may take place in the presence of a catalyst such as the mineral acid salts of the alkaline earth metals, aluminium phosphate or sulphate, zinc chloride or silica gel. In the examples, b -nitrobutyl acetate, 2-nitropropyl-1-acetate, 1-nitropropyl-2-acetate, b -nitroethyl acetate, 1-chloro-2-nitroethane and 1-chloro-2-nitropropane are pyrolysed giving the corresponding nitro-olefines and acids.
GB14415/45A1944-05-021945-06-07Improvements in the method of preparation of nitro olefines
ExpiredGB593109A
(en)