Palladium catalyzed carbonylative annulation of the C(sp<sup>2</sup>)–H bond of <i>N</i>,1-diaryl-1<i>H</i>-tetrazol-5-amines and <i>N</i>,4-diaryl-4<i>H</i>-triazol-3-amines to quinazolinones
as both directing as well as intramolecular nucleophiles. The catalytically active C–H activated intermediate dimeric Pd complex was isolated and characterized which on exposure to CO gas gave the corresponding tetrazole fused quinazolinone derivative. On the basis of isolation of the intermediate and observed kinetic isotope effects, a mechanism has been proposed for the C–H activated direct carbonylative
Desulfurization Strategy in the Construction of Azoles Possessing Additional Nitrogen, Oxygen or Sulfur using a Copper(I) Catalyst
作者:Srimanta Guin、Saroj Kumar Rout、Anupal Gogoi、Shyamapada Nandi、Krishna Kanta Ghara、Bhisma K. Patel
DOI:10.1002/adsc.201200408
日期:2012.10.8
A tandem and convergent approach to various N-, O-, or S-containing azoles has been developed by exploiting the thiophilic property of copper(I) iodide used in a catalytic quantity. The present protocol gives access to amino-substituted tetrazoles, triazoles, oxadiazoles and thiadiazoles via oxidative desulfurization of their respective precursors followed by inter- or intramolecular attack of suitable
[EN] AMINO-TETRAZOLES ANALOGUES AND METHODS OF USE<br/>[FR] ANALOGUES D'AMINO-TÉTRAZOLES ET MÉTHODES D'UTILISATION
申请人:ABBOTT LAB
公开号:WO2005111003A1
公开(公告)日:2005-11-24
A compound having Formula (I) or Formula (II) is disclosed as an P2X7 antagonist, wherein A, B, C, Y, Y, Z, m, v, R1, R2, R3, R4, and R5, are as defined in the description. Methods and compositions for treating disease or condition modulated by P2X7 are also disclosed.
for the construction of aryl tetrazole amines via desulphurization/substitution/electro cyclization/C-N cross coupling reactions from thiourea with the use of cheap, readily available and air stable copper source as catalyst has been described. The reaction proceeds through the in situ formation of amino tetrazole followed by successive C-N cross-coupling reaction with aryl iodide. Further the temperature
AbstractA highly general, efficient and simple methodology for the regioselective synthesis of aryl tetrazole amines has been explored. The present method involves consecutive desulphurization and \(C\hbox -}N\) cross-coupling reaction. Cheap, readily available and air stable cobalt catalyst has been used for this methodology. In addition, the substrate scope has been demonstrated. Graphical AbstractA
摘要已经探索了用于芳基四唑胺的区域选择性合成的高度通用,有效和简单的方法。本方法涉及连续的脱硫和\(C \ hbox -} N \)交叉偶联反应。廉价,易于获得且空气稳定的钴催化剂已用于此方法。另外,已经证明了基板范围。 图形概要已经探索了用于芳基四唑胺的区域选择性合成的高度通用,有效和简单的方法。本方法涉及连续的脱硫和\(C \ hbox -} N \)交叉偶联反应。