Divergent Coupling of Alcohols and Amines Catalyzed by Isoelectronic Hydride Mn<sup>I</sup>and Fe<sup>II</sup>PNP Pincer Complexes
作者:Matthias Mastalir、Mathias Glatz、Nikolaus Gorgas、Berthold Stöger、Ernst Pittenauer、Günter Allmaier、Luis F. Veiros、Karl Kirchner
DOI:10.1002/chem.201603148
日期:2016.8.22
Herein, we describe an efficient coupling of alcohols and aminescatalyzed by well‐defined isoelectronic hydride MnI and FeII complexes, which are stabilized by a PNP ligand based on the 2,6‐diaminopyridine scaffold. This reaction is an environmentally benign process implementing inexpensive, earth‐abundant non‐precious metal catalysts, and is based on the acceptorless alcohol dehydrogenation concept
Osmium Hydride Acetylacetonate Complexes and Their Application in Acceptorless Dehydrogenative Coupling of Alcohols and Amines and for the Dehydrogenation of Cyclic Amines
作者:Miguel A. Esteruelas、Virginia Lezáun、Antonio Martínez、Montserrat Oliván、Enrique Oñate
DOI:10.1021/acs.organomet.7b00521
日期:2017.8.14
presence of 5 mol % of KOH, complexes 3–6 promote the coupling of benzylalcohol and aniline to give N-benzylideneaniline and H2. Under the same conditions, complex 3 catalyzes a wide range of analogous couplings to afford a variety of imines, including aliphatic imines, with yields between 90 and 40% after 1–48 h. Complex 3 also catalyzes the dehydrogenation of cyclic amines. According to the amount
从OsH 6(P i Pr 3)2(1)和OsH 2 Cl 2(P i Pr 3)2(2)开始制备新的氢化配合物,以及它们在醇和胺的无受体脱氢偶联中的催化活性并报道了环胺的脱氢。配合物1与乙酰丙酮(Hacac)反应,得到经典的三氢化物OsH 3(acac)(P i Pr 3)2(3)。3的质子化用三氟甲磺酸(HOTf)产生H 2的释放并形成不饱和二氢os(IV)[OsH 2(acac)(P i Pr 3)2 ] OTf(4),也可以从2开始通过中间体OsH 2 Cl(acac)(P i Pr 3)2(5)。用KOH处理5的乙酰丙酮溶液,得到Os(acac)2(P i Pr 3)2(6)。在5摩尔%的KOH存在下,络合物3– 6促进苄醇和苯胺的偶联,得到N-苄叉基苯胺和H 2。在相同条件下,配合物3催化多种类似的偶合反应,从而提供各种亚胺,包括脂肪族亚胺,在1–48小时后收率在90%至40%
Inhibitors of the fungal cell wall. Synthesis of 4-aryl-4- N -arylamine-1-butenes and related compounds with inhibitory activities on β(1–3) glucan and chitin synthases
作者:Juan M Urbina、Juan C.G Cortés、Alirio Palma、Silvia N López、Susana A Zacchino、Ricardo D Enriz、Juan C Ribas、Vladimir V Kouznetzov
DOI:10.1016/s0968-0896(00)00003-1
日期:2000.4
As part of our project devoted to the search for antifungal agents, which act via a selective mode of action, we synthesized a series of new 4-aryl- or 4-alkyl-N-arylamine-1-butenes and transformed some of them into 2-substituted 4-methyl-tetrahydroquinolines and quinolines by using a novel three-step synthesis. Results obtained in agar dilution assays have shown that 4-aryl homoallylamines not possessing
A new series of 4-aryl and 4-alkyl-4-N-arylamine-1-butenes (homoallylamines) were synthesized and some of them transformed to 4-aryl or alkylquinolines. All of them showed strong antifungal activities against human pathogenic fungi in vitro, being Epidermophyton floccosum the most susceptible species.