[EN] NOVEL RECYCLABLE IODINATING AGENT AND ITS APPLICATIONS<br/>[FR] NOUVEL AGENT D'IODATION RECYCLABLE ET SES APPLICATIONS
申请人:COUNCIL SCIENT IND RES
公开号:WO2016113757A1
公开(公告)日:2016-07-21
The present invention provides a novel recyclable catalysts of formula A, [Formula A should be inserted here] wherein X is selected from the group consisting of [Formula should be inserted here] The present invention also provides a novel recyclable iodinating agent of formula I, II or III and a process for the synthesis thereof. [ Formula I, II & III should be inserted here] Further, the present invention provides a process of halogenation of amines and heterocyclic compounds by employing recyclable catalyst of formula (I).
An in situ acidic carbon dioxide/glycol system for aerobic oxidative iodination of electron-rich aromatics catalyzed by Fe(NO<sub>3</sub>)<sub>3</sub>·9H<sub>2</sub>O
作者:Ran Ma、Cheng-Bin Huang、An-Hua Liu、Xue-Dong Li、Liang-Nian He
DOI:10.1039/c4cy00721b
日期:——
An environmentally benign CO2/glycol reversible acidic system was developed for the iron(III)-catalyzed aerobic oxidative iodination of electron-rich aromatics without the need for any conventional acid additive or organic solvent. Notably, moderate to high isolated yields (up to 97%) of the aryl iodides were attained with comparable regioselectivity when ferric nitrate nonahydrate was used as the catalyst with molecular iodine under 1 MPa of CO2.
开发了一种环境友好的 CO2/乙二醇可逆酸性系统,用于在富电子芳香化合物上进行铁(III)催化的空气氧化碘化反应,无需任何常规酸添加剂或有机溶剂。值得注意的是,当使用无水硝酸铁作为催化剂,分子碘在 1 MPa 的 CO2 下进行反应时,获得了中等至高分离产率的碘代芳烃(高达 97%),并且具有相当的区域选择性。
PROCESS FOR PRODUCING AROMATIC AMINES
申请人:TAKASAGO INTERNATIONAL CORPORATION
公开号:US20020035295A1
公开(公告)日:2002-03-21
The present invention provides an activator in arylamination using a palladium compound as a catalyst, which is superior to conventional phosphines in stability and performance. With the phosphine sulfide as an activator, an arylamination reaction achieves improved selectivity to produce a desired aromatic amine in an obviously increased yield as compared with a reaction using the corresponding phosphine compound. Moreover, the phosphine sulfide of the invention is impervious to oxidation and exists stably in air and therefore sufficiently withstands use on an industrial scale.
Synthesis of Polysubstituted Iodobenzene Derivatives from Alkynylsilanes and 1,3-Dienes via Diels–Alder/Oxidation/Iodination Reaction Sequence
作者:Robert Möckel、Gerhard Hilt
DOI:10.1021/acs.orglett.5b00306
日期:2015.4.3
The cobalt-catalyzed Diels–Alder reaction of trimethylsilyl-substituted alkynes with 1,3-dienes led to dihydroaromatic intermediates which were transformed into iodobenzene derivatives. For this transformation, the dihydroaromatic intermediates had to be oxidized and the trimethylsilyl-substituted arene had to undergo a silicon–iodine exchange reaction. For this purpose, a number of oxidizing agents
Halogenation Using Quaternary Ammonium Polyhalides. XIV. Aromatic Bromination and Iodination of Arenes by Use of Benzyltrimethylammonium Polyhalides–Zinc Chloride System
The reaction of arenes with benzyltrimethylammonium tribromide or benzyltrimethylammonium dichloroiodate in acetic acid in the presence of ZnCl2 at room temperature or at 70 °C gave bromo- or iodo-substituted arenes in good yield, respectively.