2924-16-5Relevant articles and documents
Design, Synthesis, and Antifungal Activity of 2,6-Dimethyl-4-aminopyrimidine Hydrazones as PDHc-E1 Inhibitors with a Novel Binding Mode
Zhou, Yuan,Zhang, Shasha,Cai, Meng,Wang, Kaixing,Feng, Jiangtao,Xie, Dan,Feng, Lingling,Peng, Hao,He, Hongwu
, p. 5804 - 5817 (2021/06/25)
A series of novel 2,6-dimethyl-4-aminopyrimidine hydrazones 5 were rationally designed and synthesized as pyruvate dehydrogenase complex E1 (PDHc-E1) inhibitors. Compounds 5 strongly inhibited Escherichia coli (E. coli) PDHc-E1 (IC50 values 0.94-15.80 μM). As revealed by molecular docking, site-directed mutagenesis, enzymatic, and inhibition kinetic analyses, compounds 5 competitively inhibited PDHc-E1 and bound in a "straight"pattern at the E. coli PDHc-E1 active site, which is a new binding mode. In in vitro antifungal assays, most compounds 5 at 50 μg/mL showed more than 80% inhibition against the mycelial growth of six tested phytopathogenic fungi, including Botrytis cinerea, Monilia fructigena, Colletotrichum gloeosporioides, andBotryosphaeria dothidea. Notably, 5f and 5i were 1.8-380 fold more potent against M. fructigena than the commercial fungicides captan and chlorothalonil. In vivo, 5f and 5i controlled the growth of M. fructigena comparably to the commercial fungicide tebuconazole. Thus, 5f and 5i have potential commercial value for the control of peach brown rot caused by M. fructigena.
Synthesis of Aryl Hydrazines via CuI/BMPO Catalyzed Cross-Coupling of Aryl Halides with Hydrazine Hydrate in Water
Kumar, Siripuram Vijay,Ma, Dawei
supporting information, p. 1003 - 1006 (2018/09/20)
The N,N’-bis(2,6-dimethylphenyl)oxalamide was discovered as a powerful ligand for Cu-catalyzed cross-coupling of aryl halides with hydrazine hydrate, leading to the formation of a variety of aryl hydrazines at 80 oC in water under the assistance of K3PO4 and 4 mol% cetyltrimethylammonium bromide from aryl bromides and aryl iodides. Good to excellent yields were observed in most cases.
Preparation method for 3-fluorophenylhydrazine hydrochloride
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Paragraph 0026, (2017/05/18)
The invention relates to a preparation method for 3-fluorophenylhydrazine hydrochloride. The preparation method comprises the following steps: diazotization, reduction, purification and salt formation. During diazotization and reduction, concentrated hydrochloric acid enables a reaction solution to maintain highly acidic, so smooth and complete reaction is guaranteed. In the step of reduction, zinc dust-concentrated hydrochloric acid is used as a reducing agent to replace sodium hyposulfite, sodium bisulfate, stannous chloride-hydrochloric acid, etc., and the zinc dust-concentrated hydrochloric acid is good in reducing property and high in yield, shortens reaction time, enables impurities like zinc hydroxide produced after the reaction to be easy to remove and allows produced 3-fluorophenylhydrazine hydrochloride to be low in impurity content and high in purity. In the step of salt formation, acetone is used for leaching, so product purity is improved and product appearance is guaranteed. The preparation method is stable and reliable in process and easy to operate; and produced 3-fluorophenylhydrazine hydrochloride is high in purity (no less than 99% according to the results of content measurement via high performance liquid chromatography), has a yield of no less than 39% and completely meets market demands for 3-fluorophenylhydrazine hydrochloride.