原卟啉原氧化酶(PPO,EC 1.3.3.4)已被确定为化学除草剂家族中最重要的作用目标之一,这些除草剂具有一些有趣的特征,例如使用率低,对哺乳动物的毒性低以及对环境的影响小。 。作为开发新的PPO抑制剂的研究工作的继续,通过在C-4和C-5位上的取代基闭环设计并合成了一些重要的PPO抑制性除草剂恶二argyl的苯并噻唑类似物。的生物测定结果表明,该系列8,9,和10具有良好的PPO抑制活性ķ我值范围从0.25至18.63微米。最有趣的是9公升,鉴定了2-((5-(5-叔丁基-2-氧代-1,3,4-恶二唑-2(3 H)-基)-6-氟苯并噻唑-2-基)硫烷基)丙酸乙酯作为其最有前途的候选者,是因为它具有较高的PPO抑制作用(k i = 1.42μM)和在37.5 g ai / ha的浓度下具有广谱的芽后除草活性。
DOI:
10.1021/jf9026298
作为试剂:
描述:
ethyl ester of the lithium salt of (6-chloro-1-oxido-3,4-dihydronaphthalen-2-yl)oxoacetic acid. 在
2,4-二氯苯肼盐酸盐 作用下,
以
乙醇 为溶剂,
反应 6.0h,
生成 ethyl ester of 6-chloro-1-oxo-1,2,3,4-tetrahydronaphthalen-2-yl-(2,4-dichlorophenylhydrazono)acetic acid
参考文献:
名称:
Pyrazolecarboxylic acid tricyclic derivatives, preparation and pharmaceutical compositions containing same
Synthesis of 1,3,5-trisubstituted-1,2,4-triazoles by microwave-assisted N-acylation of amide derivatives and the consecutive reaction with hydrazine hydrochlorides
作者:Jongbok Lee、Myengchan Hong、Yoonchul Jung、Eun Jin Cho、Hakjune Rhee
DOI:10.1016/j.tet.2012.01.003
日期:2012.2
Facile and efficient procedures for the N-acylation reaction of amide derivatives with various acid anhydrides and the cyclization reaction of N-acylated amide derivatives with various hydrazinehydrochlorides were described. The reactions were carried out under microwave irradiation to give products in good yields in a few minutes. The synthesis of 1,3,5-trisubstituted-1,2,4-triazoles from benzamides
Trimethylaluminium mediated amide bond formation in a continuous flow microreactor as key to the synthesis of rimonabant and efaproxiral
作者:Tomas Gustafsson、Fritiof Pontén、Peter H. Seeberger
DOI:10.1039/b719603b
日期:——
A safe, functional-group-tolerant and high-throughput version of the trimethylaluminium mediated amide bond formation reaction has been developed in a microreactor system; rimonabant and efaproxiral were prepared to illustrate the utility of the method.
[EN] PYRAZOLE DERIVATIVES HAVING ACTIVITY AGAINST PAIN<br/>[FR] DÉRIVÉS DE PYRAZOLE AYANT UNE ACTIVITÉ CONTRE LA DOULEUR
申请人:ESTEVE LABOR DR
公开号:WO2018001973A1
公开(公告)日:2018-01-04
The present invention relates to pyrazole derivatives of formula (I) having pharmacological activity towards the α2δ subunit, in particular the α2δ-1 subunit, of the voltage-gated calcium channel, in particular having dual pharmacological activity towards both the α2δ subunit, in particular the α2δ-1 subunit, of the voltage-gated calcium channel and the μ-opioid receptor. The present invention also relates to processes of preparation of such compounds, to pharmaceutical compositions comprising them, and to their use in therapy, in particular for the treatment of pain.
Continuous Flow Process For the Synthesis of Phenylhydrazine Salts and Substituted Phenylhydrazine Salts
申请人:SHANGHAI HYBRID-CHEM TECHNOLOGIES
公开号:US20190152896A1
公开(公告)日:2019-05-23
The present invention provided a continuous flow process for the synthesis of phenylhydrazine salts and substituted phenylhydrazine salts. Diazotization, reduction, acidic hydrolysis and salifying with acids are innovatively integrated together. Using acidic liquids of aniline or substituted aniline, diazotization reagents, reductants and acids as raw materials, phenylhydrazine derivative salts is obtained through the synthesis process, which is a three-step continuous tandem reaction including diazotization, reduction, acidic hydrolysis and salifying. The described synthesis process is a kind of integrated solutions, which is carried out in an integrated reactor. The feed inlets of the integrated reactor are continuously filled with raw materials. In the integrated reactor, diazotization, reduction, acidic hydrolysis and salifying are carried out continuously and orderly, and phenylhydrazine salts or substituted phenylhydrazine salts is obtained in the outlet of the integrated reactor without interruption. The total reaction time is no more than 20 min.
Metal-free C–H arylation of imidazoheterocycles with aryl hydrazines
作者:Sourav Jana、Sadhanendu Samanta、Avik K. Bagdi、Valerii Z. Shirinian、Alakananda Hajra
DOI:10.1039/c8ra01474d
日期:——
A simple and efficient metal-freearylation of imidazo[1,2-a]pyridines at the C-3 position with arylhydrazine has been achieved at room temperature under ambient air conditions. Various 2,3-disubstituted imidazopyridines and imidazothiazoles were synthesized with high yields. The present methodology demonstrates the usefulness of commercially available aryl hydrazine as an arylating agent.
在室温和环境空气条件下,已经实现了在 C-3 位的咪唑并[1,2- a ]吡啶与芳基肼的简单有效的无金属芳基化。以高产率合成了各种 2,3-二取代的咪唑并吡啶和咪唑噻唑。本方法证明了可商购的芳基肼作为芳基化剂的有用性。