Unexpected reductive transformation of 1-substituted 5-hydroxy-4,5-diphenyl-1H-imidazol-2(5H)-ones and their cyclic analogs by the reaction with thiourea and hydrochloric acid |
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| Authors: | Vladimir V Baranov Maria M Antonova Valentina A Karnoukhova Angelina N Kravchenko |
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| Institution: | 1. N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., Moscow 119991, Russian Federation;2. Peoples’ Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya St., Moscow 117198 Russian Federation;3. A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilova St., Moscow 119991, Russian Federation |
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| Abstract: | An unexpected reductive transformation of 1-substituted 5-hydroxy-4,5-diphenyl-1H-imidazol-2(5H)-ones (imidazolones) and their cyclic analogs to give 1-substituted 4,5-diphenyl-1H-imidazol-2(5H)-ones (imidazolinones) upon reaction with thiourea and hydrochloric acid was discovered. |
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| Keywords: | Imidazolinones Imidazolones Thiourea Reductive transformation Heterocycles |
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