Mechanism of the catalytic carbonylation of aryl halides with a modified cobalt carbonyl |
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Authors: | V P Boyarskii E V Larionov S M Polyakova I A Boyarskaya T E Zhesko |
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Institution: | (1) Russian Research Institute of Petrochemical Processes, Zheleznodorozhnyi pr. 40, St. Petersburg, 192148, Russia;(2) St. Petersburg State University, St. Petersburg, Russia |
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Abstract: | Investigation of the mechanism of the carbonylation of aryl halides in a catalytic system consisting of cobalt carbonyl, terminal olefin oxide, and base showed that this catalytic system activates aryl halides via a radical anion mechanism. The kinetic regularities of the process together with IR spectral data suggest reversible formation of the active catalytic complex under the reaction condition. The complex is a cyclic metal lactone, and it can form not only from olefin oxide but also from its methanolysis product, the corresponding glycol monomethyl ether. |
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