Abstract
Dialkyl [(3,5-di-tert-butyl-4-oxocyclohexa-2,5-dien-1-ylidene)methyl]phosphonates reacted with phenol and benzenediols in the presence of trifluoromethanesulfonic acid to give products of electrophilic substitution in the benzene ring, the corresponding diarylmethylphosphonates or [phenylenebis(arylmethylene)]- diphosphonates. The reaction of diphenyl [(3,5-di-tert-butyl-4-oxocyclohexa-2,5-dien-1-ylidene)methyl]phosphonate with 2-methylbenzene-1,3-diol at a ratio of 1: 1 afforded 3-(3,5-di-tert-butyl-4-hydroxyphenyl)-6-hydroxy-7-methyl-2-phenoxy-2,3-dihydro-1,2λ5-benzoxaphosphol-6-one.
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Original Russian Text © E.M. Gibadullina, T.R. Shaekhov, Yu.K. Voronina, M.A. Pudovik, A.R. Burilov, 2018, published in Zhurnal Organicheskoi Khimii, 2018, Vol. 54, No. 4, pp. 532–538.
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Gibadullina, E.M., Shaekhov, T.R., Voronina, Y.K. et al. Reactions of [(3,5-Di-tert-butyl-4-oxocyclohexa-2,5-dien- 1-ylidene)methyl]phosphonates with Phenols. Russ J Org Chem 54, 530–536 (2018). https://doi.org/10.1134/S1070428018040036
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DOI: https://doi.org/10.1134/S1070428018040036