KI-VO(acac)<sub>2</sub>-H<sub>2</sub>O<sub>2</sub>-AcOH, A New Iodinating System for Selective Iodination at C-5 Position of Activated Pyrimidinediones: A Combined Experimental and Density Functional Study
作者:Lakhinath Saikia、Dhrubajyoti Talukdar、Ramesh C. Deka、Ashim J. Thakur
DOI:10.1002/jhet.1575
日期:2013.7
KI‐VO(acac)2‐H2O2 in aqueous ethanolic medium with acetic acid as additive has been found to iodinatepyrimidinediones and aromatic amines. The methodology is mild, efficient, and environmentally benign. Densityfunctional theory‐based reactivity parameters support the experimentally observed reactivity of pyrimidinedione derivatives.
已发现在含水乙醇介质中以乙酸为添加剂的KI-VO(acac)2 -H 2 O 2可碘化嘧啶二酮和芳族胺。该方法是温和的,有效的且对环境无害的。基于密度泛函理论的反应性参数支持嘧啶二酮衍生物的实验观察到的反应性。
Reaction of<i>N,N</i>-dimethylazidochloromethyleniminium chloride (azidophosgeniminium chloride) with 1,3-dimethyl-4-aminouracils. A new “one pot” synthesis of 3-aryl-(and 3-alkyl)-4,6-dimethyl-5,7-dioxo-1,2,3-triazolo[4,5-<i>d</i>]pyrimidines (8-azatheophyllines)<i>via</i>a diazo group transfer process
作者:Bruno Kokel、Nadia Boussouira
DOI:10.1002/jhet.5570240601
日期:1987.11
N,N-Dimethylazidochloromethyleniminiumchloride (azidophosgeniminiumchloride) (1) reacts by diazogrouptransfer with 1,3-dimethyl-4-aryl-(and alkyl)aminouracils 4 to give, under mild “onepot” reaction conditions, a very good yield of 3-aryl-(and 3-alkyl)-4,6-dimethyl-5,7-dioxo-1,2,3-triazolo[4,5-d]pyrimidines (8-azatheophyllines) 8. That reaction proceeds, very likely, through formation of non-isolated
N,N-氯化二甲基叠氮基氯甲基亚硝酸铵(叠氮基光亚甲基氯化铵)(1)与重氮基转移反应与1,3-二甲基-4-芳基-(和烷基)氨基尿嘧啶4反应,在温和的“一锅法”反应条件下得到了非常好的的3-芳基-(和3-烷基)-4,6-二甲基-5,7-二氧-1,2,3-三唑并[4,5- d ]嘧啶(8-茶碱茶碱)8。该反应很可能通过形成非分离的4-亚氨基-5-重氮尿嘧啶6来进行。
Tominaga, Yoshinori; Okuda, Hiroto; Mazume, Hisako, Journal of Heterocyclic Chemistry, 1991, vol. 28, # 5, p. 1245 - 1256