Practical Processes for Producing Fluorinated alpha-Ketocarboxylic Esters and Analogues Thereof
申请人:Central Glass Company, Limited
公开号:US20180050976A1
公开(公告)日:2018-02-22
It is possible to produce a fluorine-containing α-ketocarboxylic ester hydrate by reacting a fluorine-containing α-hydroxycarboxylic ester with sodium hypochlorite or calcium hypochlorite of 21 mass % or greater in mass percentage of composition. Furthermore, it is possible to produce a fluorine-containing α-ketocarboxylic ester by reacting the hydrate with a dehydrating agent. Furthermore, it is possible to produce a fluorine-containing α-ketocarboxylic ester hemiketal by reacting the fluorine-containing α-ketocarboxylic ester hydrate with a lower alcohol or a trialkyl orthocarboxylate. Moreover, it is possible to produce a fluorine-containing α-ketocarboxylic ester by reacting the hemiketal with a dealcoholization agent.
A Three-Component Synthesis of trifluoromethylated hexahydropyrrolo[1,2-a]imidazol-5-ones and hexahydropyrrolo[1,2-a]pyrimidin-6-ones
作者:Marina V. Goryaeva、Olesya А. Fefelova、Yanina V. Burgart、Marina А. Ezhikova、Mikhail I. Kodess、Pavel А. Slepukhin、Galina А. Triandafilova、Sergey Yu. Solodnikov、Olga P. Krasnykh、Victor I. Saloutin
DOI:10.1007/s10593-022-03108-4
日期:2022.9
A three-component reaction of ethyl trifluoropyruvate, methyl ketones, and ethylenediamine or 1,3-diaminopropane afforded hexahydropyrrolo[1,2-a]imidazol-5-ones and hexahydropyrrolo[1,2-a]pyrimidin-6-ones. When using an excess of ethyl trifluoropyruvate in reactions with acetone and diamines, dipyrrolo[1,2-a:2',1'-b]imidazole-3,8-dione and dipyrrolo[1,2-a:2',1'-b]pyrimidine-3,9-dione were obtained
三氟丙酮酸乙酯、甲基酮和乙二胺或 1,3-二氨基丙烷的三组分反应得到六氢吡咯并[1,2- a ]咪唑-5-酮和六氢吡咯并[1,2 - a ]嘧啶-6-酮。当使用过量的三氟丙酮酸乙酯与丙酮和二胺反应时,dipyrrolo[1,2- a :2',1'- b ]imidazole-3,8-dione 和 dipyrrolo[1,2- a :2',1得到' -b ]嘧啶-3,9-二酮。提出了形成双环和三环化合物的羟醛机制,并建立了它们的非对映异构体结构。一些获得的杂环被发现具有镇痛活性。
SALOUTIN, V. I.;PITERSKIX, I. A.;PASHKEVICH, K. I.;KODESS, M. I., IZV. AN CCCP. CEP. XIM., 1983, N 11, 2568-2575
作者:SALOUTIN, V. I.、PITERSKIX, I. A.、PASHKEVICH, K. I.、KODESS, M. I.