Quantum-chemical study of isocyanate reactions with linear methanol associates: IX. Methyl isocyanate reaction with methanol-phenol complexes |
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| Authors: | A. Ya. Samuilov S. V. Nesterov F. B. Balabanova Ya. D. Samuilov A. I. Konovalov |
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| Affiliation: | 1. Kazan National Research Technological University, Kazan, 420015, Russia
2. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, Kazan, Russia
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| Abstract: | Quantum-chemical method B3LYP/6-311++G(df,p) was applied to the study of complex formation between phenol and methanol. The complexes of molecules bound by the hydrogen bond possess enhanced donoracceptor and acid-base properties as compared to monomer molecules. The reactions of phenol and methanol complexes with methyl isocyanate proceed through a concerted late asymmetric transition state by the type of nucleophilic addition. The most kinetically and thermodynamically favorable transformation is the process involving the complex “phenol-acceptor, methanol-donor.” Phenol compounds are able to catalyze the addition of alcohols to isocyanates. |
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