Osmium-Promoted Transformation of Alkyl Nitriles to Secondary Aliphatic Amines: Scope and Mechanism
作者:Juan C. Babón、Miguel A. Esteruelas、Ana M. López、Enrique Oñate
DOI:10.1021/acs.organomet.0c00236
日期:2020.6.8
symmetrical and asymmetricalsecondary aliphatic amines promoted by the hexahydride complex OsH6(PiPr3)2 (1) is described, and the mechanisms of the reactions involved are established. Complex 1 catalyzes the aforementioned transformations of aryl-, pyridyl-, and alkoxy-functionalized alkyl nitriles with linear or branched chains. The formation of the secondary amines involves primary imines, primary amines
描述了由六氢化物配合物OsH 6(P i Pr 3)2(1)促进的烷基腈向对称和不对称仲脂肪族仲胺的转化,并建立了涉及的反应机理。配合物1催化具有直链或支链的芳基,吡啶基和烷氧基官能化的烷基腈的上述转化。仲胺的形成涉及伯亚胺,伯胺和仲亚胺作为有机中间体。反应在温和的条件下(甲苯,100°C和4 bar H 2)进行。1的化学计量反应与新戊腈和2-甲氧基乙腈一起使我们能够分离三氢化物氮杂亚乙烯基衍生物OsH 3 ═N═CHR}(P i Pr 3)2(R = t Bu(3),CH 2 OMe(4))。它们的形成涉及将底物的N–C三键插入不饱和四氢化物OsH 4(P i Pr 3)2(A)的Os–H键中,这是通过从六氢化合物中消除H 2产生的前体。这些三氢化物氮杂亚乙烯基物质与H 2的反应是还原腈的N-C三键的关键步骤。在没有H 2的情况下,A对氮杂亚乙烯基配体的攻击会导致其C(sp 2)–C(sp
[EN] ANTIMICROBIAL COMPOUNDS, THEIR SYNTHESIS AND APPLICATIONS THEREOF<br/>[FR] COMPOSÉS ANTIMICROBIENS, LEUR SYNTHÈSE ET LEURS APPLICATIONS
申请人:JNCASR BANGALORE
公开号:WO2014097178A1
公开(公告)日:2014-06-26
The present disclosure relates to the field of medicinal chemistry and more particularly to the development of antimicrobial compounds. The disclosure relates to the synthesis and characterization of compounds comprising aromatic radical or an aliphatic radical, an alkyl amine and amino acid moiety wherein said compounds exhibit antimicrobial activity against various drug-sensitive and drug-resistant pathogenic 10 microorganisms.
Water-soluble membrane-active compounds, that are active againstPlasmodiumsp. bothin vitroandin vivoare reported.
水溶性膜活性化合物,对体外和体内的疟原虫sp.都具有活性。
<i>endo</i>-Cavity Complexation and Through-the-Annulus Threading of Large Calixarenes Induced by Very Loose Alkylammonium Ion Pairs
作者:Carmine Gaeta、Francesco Troisi、Placido Neri
DOI:10.1021/ol100578z
日期:2010.5.7
through-the-annulus threading of scarcely efficient macrocyclic hosts was obtained by exploiting the inducing effect of the weakly coordinating tetrakis[3,5-bis(trifluoromethyl)phenyl]borate (TFPB) anion that gives free “naked” cations. This method works very well with simple, conformationally mobile calix[6−7]arene ethers, which give conformationally blocked endo-calix or [2]pseudorotaxanecomplexes.
ANTIMICROBIAL COMPOUNDS, THEIR SYNTHESIS AND APPLICATIONS THEREOF
申请人:JAWAHARLAL NEHRU CENTRE FOR ADVANCED SCIENTIFIC RESARCH
公开号:US20150329478A1
公开(公告)日:2015-11-19
The present disclosure relates to the field of medicinal chemistry and more particularly to the development of antimicrobial compounds. The disclosure relates to the synthesis and characterization of compounds comprising aromatic radical or an aliphatic radical, an alkyl amine and amino acid moiety wherein said compounds exhibit antimicrobial activity against various drug-sensitive and drug-resistant pathogenic
10
microorganisms.