Synthesis of cresotic acids by carboxylation of cresols with sodium ethyl carbonate


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Аннотация

Carboxylation of o-cresol, m-cresol, and p-cresol with sodium ethyl carbonate (SEC) proceeds regioselectively with the formation of cresotic acids: 2-hydroxy-3-methylbenzoic acid, 2-hydroxy-4-methylbenzoic acid, and 2-hydroxy-5-methylbenzoic acid, respectively. Optimal conditions for conducting the process have been found to be as follows: the reactants ratio of [cresol]: [sodium ethyl carbonate] = (1.5–2): 1, T = 180–185°C, \({P_{C{O_2}}}\) = 10 atm, and t = 6–7 h. Simple and convenient methods for the synthesis of cresotic acids, which can be used for their industrial manufacturing, have been developed.

Авторлар туралы

Kh. Suerbaev

Al-Farabi Kazakh National University

Хат алмасуға жауапты Автор.
Email: khsuerbaev@mail.ru
Қазақстан, Almaty, 050040

E. Chepaikin

Institute of Structural Macrokinetics and Materials Science

Хат алмасуға жауапты Автор.
Email: echep@ism.ac.ru
Ресей, Chernogolovka, 142432

N. Kudaibergenov

Al-Farabi Kazakh National University

Email: echep@ism.ac.ru
Қазақстан, Almaty, 050040

G. Zhaksylykova

Al-Farabi Kazakh National University

Email: echep@ism.ac.ru
Қазақстан, Almaty, 050040

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