Synthesis of sterically hindered benzoquinone methacrylates |
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Authors: | M P Shurygina O V Markina N O Druzhkov T I Kulikova A V Cherkasov A V Piskunov S A Chesnokov V K Cherkasov |
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Institution: | 1165. G. A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, 49 ul. Tropinina, 603950, Nizhny Novgorod, Russian Federation
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Abstract: | Sterically hindered p- and o-benzoquinone methacrylates, viz., 2,5-di(tert-butyl)-3,6-di-oxocyclohexa-1,4-dienyl methacrylate and 2,5-di(tert-butyl)-3,4-dioxocyclohexa-1,5-dienyl methacrylate, were synthesized by O-acylation of the lithium and tetrabutylammonium salts of 3,6-di(tert-butyl)-2-hydroxy-p-benzoquinone with methacryloyl chloride. The influence of the nature of cation and solvent on regioselectivity of the acylation was studied. The o-benzoquinone derivative obtained can serve as a paramagnetic ligand in metal complexes. |
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