A Green and Convenient Route for the Regioselective Synthesis of New Substituted 3-Aryl-5H-indeno[1,2-c]pyridazines as Potential Monoamine Oxidase Type A Inhibitors
作者:Mehdi Rimaz、Farkhondeh Aali、Behzad Khalili、Rolf H. Prager
DOI:10.1071/ch16364
日期:——
synthesised using the one-pot, three-component reaction of substituted indanones, arylglyoxalmonohydrates, and hydrazine in the presence of 1,5-diazabicyclo[4,3,0]non-5-ene (DBN) in water at room temperature. These substituted 3-aryl indeno[1,2-c]pyridazines can be considered as potential monoamine oxidase type A (MAOA) inhibitors. The advantages of this new strategy are the novelty of the indenopyridazine derivatives
在1,5-二氮杂双环[4,3,0] non-5存在下,使用取代的茚满酮,芳基乙醛一水合物和肼的一锅三组分反应可有效合成数种茚并[1,2- c ]哒嗪-烯(DBN)在室温下的水中。这些取代的3-芳基茚并[1,2- c ^ ]哒嗪可以被认为是潜在的单胺氧化酶A型(MAO甲)抑制剂。该新策略的优点是茚并哒嗪衍生物的新颖性,高区域选择性,使用水作为溶剂,不需要有毒金属催化剂以及良率至良率。
Regiospecific one-pot, combinatorial synthesis of new substituted pyrimido[4,5-$c$]pyridazines as potential monoamine oxidase inhibitors
作者:Mehdi RIMAZ、Paria POURHOSSEIN、Behzad KHALILI
DOI:10.3906/kim-1408-32
日期:——
New 3-aryl-6-methylpyrimido[4,5-c]pyridazine-5,7(6H,8H)-diones and 3-aryl-6-ethyl-7-thioxo-7,8-dihydropyrimido[4,5-c]pyridazin-5(6H)-ones were efficiently synthesized via a regiospecific one-pot reaction of N-methylbarbituric acid and N-ethyl-2-thiobarbituric acid with various arylglyoxal monohydrates in the presence of hydrazine dihydrochloride in ethanol at 50 °C. The target compounds were obtained in high yields and were regioisomerically pure after recrystallization. These new heterocycles may act as potential MAO_B} inhibitors.
Two Efficient One-Pot Approaches for Regioselective Synthesis of New 3-Arylpyridazino[4,3-c]quinolin-5(6H)-ones
作者:Mehdi Rimaz
DOI:10.1071/ch15029
日期:——
Two efficient regioselective approaches for the one-potsynthesis of 3-arylpyridazino[4,3-c]quinolin-5(6H)-onederivatives are reported, by the three-component reaction of arylglyoxal monohydrates, quinoline-2,4-diol, and hydrazinium dihydrochloride or hydrazine hydrate in ethanol and pyridine. In ethanol, the reactions were catalyzed by 1,4-diazobicyclo[2,2,2]octane. The features of both procedures
通过芳基乙二醛一水合物喹啉-2,4-的三组分反应,报告了一种有效的区域选择性方法,用于一锅合成3-芳基吡啶并[4,3- c ]喹啉-5(6 H)-一衍生物。二醇和肼盐酸盐或乙醇和吡啶中的水合肼。在乙醇中,反应是由1,4-重氮双环[2,2,2]辛烷催化的。两种方法的特点是区域选择性高,反应条件温和,收率高到高以及操作简便。
Chemoselective synthesis of biheterocyclic skeletons tetrahydro-1H-pyrrolo[1,2-c]imidazole and tetrahydropyrrolo[1,2-c]thiazole derivatives via multicomponent self-sorting domino strategy
A highly efficient chemoselective synthesis of multifunctionalized tetrahydro-1H-pyrrolo[1,2-c]imidazole and tetrahydropyrrolo[1,2-c]thiazole derivatives has been established fromarylglyoxal monohydrates, nitriles, and thioureas. A series of control experiments suggested that this reaction proceeded through the convergent integration of two self-sorting domino sequences. This synthetic strategy is
从芳基乙二醛一水合物,腈和硫脲建立了多官能化四氢-1 H-吡咯并[1,2- c ]咪唑和四氢吡咯并[1,2 - c ]噻唑衍生物的高效化学选择性合成。一系列对照实验表明,该反应是通过两个自排序多米诺骨牌序列的融合整合而进行的。这种合成策略有望用于生物碱类似物的多样性导向合成。
A green and practical one-pot two-step strategy for the synthesis of symmetric 3,6-diarylpyridazines
A simple, mild, and efficient synthesis of symmetric 3,6‐diarylpyridazine derivatives using a green catalytic one‐pot two‐step reaction of aryl methyl ketones, arylglyoxal monohydrates, and hydrazine hydrate was developed. Environmentally benign nature, high atom‐economy, no harmful byproduct, easy workup procedure, no column chromatography steps, and moderate to excellent yields of the products are