Quaternary N-alkyl pyrazole derivatives and their method of preparation are described. The pyrazole derivatives are useful as antimicrobial agents.
本文介绍了四元N-烷基吡唑衍生物及其制备方法。这些吡唑衍生物可用作抗微生物剂。
Quaternary pyrazole derivatives, process for their preparation and their use as fungicides and bactericides
申请人:CILAG-CHEMIE A.G.
公开号:EP0020077A1
公开(公告)日:1980-12-10
Quaternary pyrazoles of the formula
are effective antimicrobial agents which are particularly useful in combatting such microorganisms as bacteria, yeasts, and fungi. Antimicrobial compositions comprising the quaternary pyrazoles, and a process for preparing the quaternary pyrazoles, are described.
Iridium‐Catalyzed Regio‐ and Enantioselective Borylation of Unbiased Methylene C(sp
<sup>3</sup>
)−H Bonds at the Position β to a Nitrogen Center
作者:Rongrong Du、Luhua Liu、Senmiao Xu
DOI:10.1002/anie.202016009
日期:2021.3.8
pyrazole‐directed iridium‐catalyzedenantioselectiveborylation of unbiased methylene C−H bonds at the position β to a nitrogen center. The combination of a chiral bidentate boryl ligand, iridium precursor, and pyrazole directing group was responsible for the high regio‐ and enantioselectivity observed. The method tolerated a vast array of functional groups to afford the corresponding C(sp3)−H functionalization