Solvent-dependent metal-free chemoselective synthesis of benzimidazoles and 1,3,5-triarylbenzenes from 2-amino anilines and aryl alkyl ketones catalyzed by I2
作者:Yuxin Ding、Renchao Ma、Yongmin Ma
DOI:10.1016/j.tetlet.2021.153016
日期:2021.4
the synthesis of benzimidazoles and 1,3,5-triarylbenzenes via the annulation of 2-amino anilines and arylalkylketones or the cyclization of arylalkylketones, respectively. With 1,4-dioxane as the solvent, sequential CN bond formation followed by C(CO)-C(CH3) bond cleavage leads to the formation of benzimidazoles in a highly selective manner while aldol-type self-condensation of arylalkyl ketones
Synthesis of α-pyrones by catalytic oxidative coupling of terminal alkynes and carbon dioxide
作者:Saray Oliveros-Cruz、Alma Arévalo、Juventino J. García
DOI:10.1016/j.jorganchem.2016.12.033
日期:2017.3
[(dippe)Ni(μ-H)]2 (1) as a catalyst precursor (10 mol%) in the presence of a variety of terminalalkynes and CO2 allowed the production of substituted α–pyrones. This reaction occurs using relatively mild conditions (50 °C, 150 psi of CO2) with good to modest yields, depending on the nature of the substituents in the corresponding alkyne. The produced α–pyrones were characterized by different analytical methods
在各种末端炔烃和CO 2存在下,使用复合物[(dippe)Ni(μ-H)] 2(1)作为催化剂前体(10摩尔%)可以生产取代的α-吡喃酮。该反应在相对温和的条件下(50°C,150 psi CO 2)进行,其收率良好至中等,具体取决于相应炔烃中取代基的性质。产生的α-吡喃酮通过不同的分析方法和光谱技术进行表征。
Highly Efficient and Novel Method for Synthesis of 1,3,5-Triarylbenzenes from Acetophenones
Heteropolyacid-phosphomolybdic acid has been found to be an efficient and recyclable catalyst for cyclotrimerization of acetophenones into 1,3,5-triarylbenzenes in good yields.
Room-Temperature Synthesis of 1,3,5-Tri(<i>het</i>)aryl Benzene from Nitroalkenes Using Pd(OAc)<sub>2</sub>: Complete Mechanistic and Theoretical Studies
作者:Siba P. Midya、Subal Mondal、Abu S. M. Islam、Ambreen Rashid、Sahidul Mondal、Ankan Paul、Pradyut Ghosh