CARBOXYLATION OF FORMIC ACID IN AQUEOUS SOLUTIONS UNDER THE INFLUENCE OF U.V.-LIGHT |
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Authors: | Nikola Getoff |
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Institution: | Institut fur Radiumforschung und Kemphysik der Osterreichischen Akademie der Wissenschaften, Wien IX, Austria |
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Abstract: | Abstract— Carboxylation of various organic substances by dissolved carbon dioxide or bicarbonate is achieved by the action of U.V. -Light of 184.9 and 253.1 mμ on water. The transformation of formic acid to oxalic acid was investigated in more detail as a function of u.v.-dose, pH-values and the formate concentration. For an irradiation period of 12 hr of 0.1 M formate, a yield of about 2 m mol.1--1 oxalic acid was obtained. A reaction mechanism for the photochemical carboxylation process is presented. The results are of some interest in respect of the synthesis of organic compounds under the primitive earth conditions. |
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