在这项研究中,我们介绍了一种新的有机-无机杂化化合物(C 7 H 8 N 3)2 [CoCl 4 ]的晶体结构,光谱和热行为,Hirshfeld表面分析和DFT计算。该化合物在中心对称空间群P中结晶1个¯。X射线单晶衍射分析表明,该结构由一连串的混合层组成,这些混合层由平行于(001)平面并沿c轴传播的有机阳离子和无机阴离子形成。通过NH … Cl氢键和π … π相互作用将层进一步组装为3D超分子体系。实验PXRD图谱的峰位置与晶体结构的模拟峰位置一致,表明标题化合物的相纯度。通过ATR-FTIR和FT-Raman光谱学鉴定了不同官能团的存在及其振动的性质。Co 2+的四面体环境通过紫外可见光谱法得到证实,其中由于dd电子跃迁4 A 2(F)→ 4 T 2(F),4 A 2(F)→ 4 T 1( F)和4 A 2(F)→ 4 T 1(P)Co(II)配位化合物的典型代表。通过Tauc
Iron Catalysis for Modular Pyrimidine Synthesis through β-Ammoniation/Cyclization of Saturated Carbonyl Compounds with Amidines
作者:Xue-Qiang Chu、Wen-Bin Cao、Xiao-Ping Xu、Shun-Jun Ji
DOI:10.1021/acs.joc.6b02767
日期:2017.1.20
method for the modular synthesis of various pyrimidine derivatives by means of the reactions of ketones, aldehydes, or esters with amidines in the presence of an in situ prepared recyclable iron(II)-complex was developed. This operationally simple reaction proceeded with broad functionalgroup tolerance in a regioselective manner via a remarkable unactivated β-C–H bond functionalization. Control experiments
The present invention covers heteroarylbenzimidazole compounds of general formula (I) in which R1, R2, R3, R4 and R5 are as defined herein, methods of preparing said compounds, intermediate compounds useful for preparing said compounds, pharmaceutical compositions and combinations comprising said compounds and the use of said compounds for manufacturing pharmaceutical compositions for the treatment or prophylaxis of diseases, in particular of hyperproliferative and/or inflammatory disorders, as a sole agent or in combination with other active ingredients.
A metal-free, visible-light photoredox-catalyzed three-component [3 + 2 + 1] heteroannulation for accessing modular fluoroalkylated pyrimidines from readily available silyl enolether, amidine, and fluoroalkyl halide is developed. This protocol distinguishes itself by broad functional group tolerance in a regioselective manner, which provides a complement to the existing methods for the construction
An efficient copper-catalyzedthree-component cyclization for the construction of highly functionalized pyrimidine derivatives from readily available amidines, styrenes and fluoroalkyl halides is developed. This protocol distinguishes itself by the formation of three new C–C/C–N bonds and a new six-membered ring through a radical addition/oxidation/cyclization sequence in a one-pot manner.
The reaction of 3-azidopropanoic acid with the carbodiimide-based coupling reagent DIC leads to a six-membered-ring intermediate acting as a versatile precursor to a diverse set of aza heterocycles, including mono-, bi-, and tricyclic compounds.