Chlorinations of derivatives of 2, 2, 2-trichlorobenzo-1, 3, 2-dioxaphospholes

…, AT Gubaidullin, IA Litvinov, AI Konovalov

Index: Varaksina; Mironov; Shtyrlina; Dobrynin; Cherkin; Gubaidullin; Litvinov; Konovalov Russian Journal of Organic Chemistry, 2008 , vol. 44, # 7 p. 988 - 999

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Abstract

Abstract By 31 P, 13 C, 13 C-{1 H}, and 1 H NMR spectroscopy the chlorination of 4-and 5- methyl-2, 2, 2-trichlorobenzo-1, 3, 2-dioxaphosphols was shown to provide in quantitative yield 4-methyl-2, 2, 2, 5-tetrachloroand 6-methyl-2, 2, 2, 5-tetrachlorobenzo-1, 3, 2- dioxaphosphols. Their hydrolysis led to the formation of difficultly available 4-methyl-5- chloro-and 3-methyl-4-chloro-1, 2-dihydroxybenzenes. The structure of the latter ...