Mmm, a reaction sandwich…︁ Using an immunoassay‐based technique able to monitor any kind of cross‐coupling reaction, a systematic and rapid evaluation of a large panel of random reactions was carried out. This approach led to the discovery of two new copper‐promoted reactions: a desulfurization reaction of thioureas leading to isoureas and a cyclization reaction leading to thiazole derivatives from
Sustainable Synthesis of Diverse Privileged Heterocycles by Palladium-Catalyzed Aerobic Oxidative Isocyanide Insertion
作者:Tjøstil Vlaar、Razvan C. Cioc、Pieter Mampuys、Bert U. W. Maes、Romano V. A. Orru、Eelco Ruijter
DOI:10.1002/anie.201207410
日期:2012.12.21
O2 in, H2O out: Various diamines and related bisnucleophiles readily undergo oxidativeisocyanideinsertion with Pd(OAc)2 (1 mol %) as the catalyst and O2 as the terminal oxidant to give a diverse array of medicinally relevant N heterocycles. The utility of this highly sustainable method is demonstrated by a formal synthesis of the antihistamines astemizole and norastemizole.
O 2 in,H 2 O out:各种二胺和相关的双亲核试剂易于经历氧化异氰化物的插入,其中Pd(OAc)2(1 mol%)作为催化剂,O 2作为末端氧化剂,可得到多种与医学相关的N杂环。抗组胺药阿司咪唑和去甲阿司咪唑的正式合成证明了这种高度可持续性方法的实用性。
Iron-catalyzed direct amination of azoles using formamides or amines as nitrogen sources in air
A new iron-catalyzed, direct C-H amination of azoles at C2 has been developed by usingformamides or amines as nitrogen sources. Imidazole is the only additive in the catalyst system and oxygen in air is employed during the transformation process.
An efficient synthesis of 2-aminobenzoxazoles is described by a direct oxidative amination of unfunctionalized benzoxazoles with primary amines. The reaction could be performed in the absence of transition metals by using catalytic amounts of a quaternary ammonium iodide and tert-butylhydroperoxide as a cheap and easy-to-handle co-oxidant. In addition to primary amines, aqueous solutions of NH3 were used to introduce a primary amine group into the heterocyclic core.
[EN] DIARYLAMINE-SUBSTITUTED QUINOLONES USEFUL AS INDUCIBLE NITRIC OXIDE SYNTHASE INHIBITORS<br/>[FR] QUINOLONES SUBSTITUÉES PAR DIARYLAMINE UTILES COMME INHIBITEURS DE L'OXYDE NITRIQUE SYNTHASE INDUCTIBLE.
申请人:KALYPSYS INC
公开号:WO2009029617A1
公开(公告)日:2009-03-05
Novel diarylamine-substituted quinolone compounds and pharmaceutical compositions, certain of which have been found to inhibit inducible NOS synthase have been discovered, together with methods of synthesizing and using the compounds including methods for the treatment of iNOS-mediated diseases in a patient by administering the compounds.