Synthesis of 2-substituted-3-nitroimidazo[1,2-<i>b</i>]pyridazines as potential biologically active agents
作者:Thierry Terme、Joséa Maldonado、Michel P. Crozet、Patrice Vanelle、Christophe Galtier、Alain Gueiffier
DOI:10.1002/jhet.5570390125
日期:2002.1
first time. It was shown to react under phase-transfer catalysis conditions with 2-nitropropane anion by an SRN1mechanism to give excellent yield of isopropylidene derivative formed from a base-promoted nitrous acid elimination of C-alkylation product. Extension of this SRN1 reaction to various nitronate anions led to a new class of 3-nitroimidazo[1,2-b]pyridazine derivatives bearing a trisub-stituted
首次合成了一种新型的杂环还原烷基化剂6-氯-2-氯甲基-3-硝基咪唑并[1,2- b ]哒嗪。已表明通过S RN 1机理在相转移催化条件下与2-硝基丙烷阴离子反应,可得到由碱促进的亚硝酸消除C-烷基化产物形成的异亚丙基衍生物的优异收率。该S RN 1反应扩展到各种亚硝酸根阴离子导致了新的一类3-硝基咪唑并[1,2- b ]哒嗪衍生物,该衍生物在2-位带有一个三取代的双键。
[VO(H2O)5]H[PMo12O40]-catalyzed nitration of alkanes with nitric acidElectronic supplementary information (ESI) available: Experimental section. See http://www.rsc.org/suppdata/cc/b3/b314978a/
[VO(H2O)5]H[PMo12O40], which contains vanadyl counter cations and PMo12O40(3-), can act as a catalyst for the nitration of various alkanes including alkylbenzenes using nitricacid as a nitrating agent in acetic acid at 356 K.
[VO(H2O)5] H [PMo12O40]包含钒基抗衡阳离子和PMo12O40(3-),可在356 K下使用硝酸作为硝酸硝化剂,催化硝化各种烷烃,包括烷基苯。 。
Synthèse par réaction sRN1 de nouveaux dérivés en série imidazo[1,2-α]pyridine à potentialités pharmacologiques
作者:Patrice Vanelli、Nacer Madadi、Christine Roubaud、José Maldonado、Michel P. Crozet
DOI:10.1016/s0040-4020(01)87129-5
日期:1991.1
The study of SRN1 reaction between 2-chloromethyl-3-nitroimidazo[1,2-a] pyridine and 2-nitropropane salts has been extended to various aliphatic, cyclic and heterocyclic nitronate anions. From C-alkylation products, base-promoted nitrous acid elimination afforded new potential pharmacological derivatives with a trisubstituted double bond at the 2 position.
Catalytic nitration of alkanes with nitricacid was first successfully achieved by the use of N-hydroxyphthalimide (NHPI) under mild conditions; the key to the present nitration was found to be the in situ generation of NO2 and phthalimide N-oxyl radical by the reaction of NHPI with nitricacid.
[EN] NITRATED HYDROCARBONS, DERIVATIVES, AND PROCESSES FOR THEIR MANUFACTURE<br/>[FR] HYDROCARBURES NITRÉS, DÉRIVÉS ET LEURS PROCÉDÉS DE PRODUCTION
申请人:ANGUS CHEMICAL
公开号:WO2009129097A1
公开(公告)日:2009-10-22
Provided is a process for the formation of nitrated compounds by the nitration of hydrocarbon compounds with dilute nitric acid. Also provided are processes for preparing industrially useful downstream derivatives of the nitrated compounds, as well as novel nitrated compounds and derivatives, and methods of using the derivatives in various applications.