Synthesis and reactions of chloroazodienes. A new and general synthesis of pyridazines
作者:Michael S. South、Terri L. Jakuboski
DOI:10.1016/0040-4039(95)01128-5
日期:1995.8
base gives 4-chloroazodienes, which were found to combine with a variety of electron rich olefins to yield chloro-substituted tetrahydropyridazines. These chloroazodiene cyclizations are best characterized as inverse electron demand, 4+2 hetero Diels-Alder reactions that maintain a high degree of regio- and stereochemical control. The chloro-substituted tetrahydropyridazines that are formed give high yields
Synthesis and Reactions of Haloazodienes. A New and General Synthesis of Substituted Pyridazines
作者:Michael S. South、Terri L. Jakuboski、Mark D. Westmeyer、Daniel R. Dukesherer
DOI:10.1021/jo960029e
日期:1996.1.1
tetrahydropyridazines that are formed give high yields of substituted pyridazines upon treatment with base (Table 1). The sequence of a chloroazodiene cyclization to a tetrahydropyridazine followed by an aromatization constitutes a new and generalsynthesis of substituted pyridazines. In contrast to the haloazodiene cyclizations, the novel cyclization reactions of the in-situ generated 1-carbethoxy-3-phenyl-4
Synthesis of 1,4,5,6-tetrahydropyridazines and pyridazines <i>via</i> transition-metal-free (4 + 2) cycloaddition of alkoxyallenes with 1,2-diaza-1,3-dienes
作者:Qi Wu、Pan-Lin Shao、Yun He
DOI:10.1039/c9ra02712b
日期:——
We developed an economical and practical protocol for the synthesis of 1,4,5,6-tetrahydropyridazines. A diverse range of alkoxyallenes and 1,2-diaza-1,3-dienes undergo (4 + 2) cycloaddition to generate the desired products in excellent yields. The high efficiency, wide substrate scope and good functional group tolerance of this process, coupled with operational simplicity, render the method synthetically
Herbicidal pyridazines and method for controlling undesirable plant
申请人:American Cyanamid Company
公开号:US04623376A1
公开(公告)日:1986-11-18
This invention relates to a method for controlling undesirable monocotyledonous and dicotyledonous plant species by applying to the foliage thereof or to soil containing seeds or other propagating organs of said plant species, a herbicidally-effective amount of a pyridazine compound. The invention also relates to novel herbicidally-effective pyridazine compounds.
[EN] ANTI-INFLAMMATORY AND PROTEIN KINASE INHIBITOR COMPOSITION AND METHOD OF USE<br/>[FR] COMPOSITION ANTI-INFLAMMATOIRE ET INHIBITRICE DE LA PROTEINE KINASE ET METHODE D'UTILISATION
申请人:UNIV NORTHWESTERN
公开号:WO2003018563A1
公开(公告)日:2003-03-06
A novel class of pyridazine compositions and related methods of use.