Amino(hetero)arylmethylation of Phenols with N-[α-Amino(hetero)arylmethyl]benzotriazoles
摘要:
N-[alpha-Amino(hetero)arylmethyl]benzotriazole derived from a variety of (hetero)aromatic aldehydes were reacted with sodium phenolates to afford amino(hetero)arylmethylated phenols in high yields.
Abstract A simple, general, and highly efficient Betti base ligand has been developed for copper-catalyzed Ullmann coupling of phenol with arylhalides without the protection of an inert atmosphere. The reaction proceeds smoothly in the presence of K2CO3 as the base and dimethylsulfoxide as the solvent. The catalyst was reused several times with no evident loss of catalytic activity and is environmentally
Facile synthesis of aminoalkyl naphthols and single crystal X-ray, computational studies on 1-[morpholino(thiophen-2-yl)methyl]naphthalen-2-ol
作者:C.P. Surya、G. Harichandran、S. Muthu
DOI:10.1016/j.molstruc.2021.130861
日期:2021.10
An efficient, eco-friendly protocol is developed for the synthesis of 1- (α-aminoalkyl)-2-naphthol derivatives via one-pot three-component reaction of 2-naphthol, aromatic aldehydes and piperidine or morpholine in the presence of Amberlite IRA-400 Cl resin as a catalyst. This approach carries characteristics of one-pot synthesis, high yield, and mild, clean reaction conditions with the recyclable catalyst
C-C bond cleavage: Metal-free-catalyzed reaction of Betti bases with various heterocycles under microwave irradiation
作者:Mohit L. Deb、B.-Shriya Saikia、Kongkona Borah、Pranjal K. Baruah
DOI:10.1080/00397911.2016.1239740
日期:2016.12.1
ABSTRACT The reaction of Betti bases with various heterocycles in the presence of p-toluenesulphonic acid (PTSA) under microwave irradiation gives bis(heterocycle)methanes through benzyl transfer. The reaction proceeds via the cleavage of C-N bond followed by C-C bond. The metal-free cleavage of C-C bond, which is in fact a C-dearylation, is rarely reported in the literature. GRAPHICAL ABSTRACT
A peroxide-free methodology was developed for the synthesis of benzoylated naphthol/phenol derivatives through oxidative deamination reaction performed under aerobic reaction conditions. A synergistic combination of Cu(OTf)2 and Ag2O was used to convert the aminonaphthols and aminophenols to the corresponding benzoylated derivatives. The definite role of atmospheric oxygen to assist the reaction was
present study, a molecular level engineered-based method was used to synthesis a copper-based nanomagnetic catalyst (Fe3O4@CQD@Si (OEt)(CH2)3NH@CC@N3@phenylacetylene@Cu). The as-synthesized catalyst was characterized using different techniques, including infrared (IR), X-ray powder diffraction (XRD), field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM), energy-dispersive
在本研究中,基于分子水平的工程化方法用于合成铜基纳米磁性催化剂(Fe 3 O 4 @CQD@Si (OEt)(CH 2 ) 3 NH@CC@N 3 @苯基乙炔@Cu) . 使用不同的技术对合成的催化剂进行表征,包括红外(IR)、X 射线粉末衍射(XRD)、场发射扫描电子显微镜(FESEM)和透射电子显微镜(TEM)、能量色散 X 射线光谱( EDX) 和 EDX 元素映射、感应耦合等离子体 (ICP)、热重分析 (TGA) 和差热分析 (DTA) 以及振动样品磁强计 (VSM)。Fe 3 O 4使用碳量子点 (CQD) 代替传统的 SiO 2保护纳米粒子表面. 在 1-氨基烷基-2-萘酚衍生物的合成中评估了所合成催化剂的活性。反应时间短、反应收率高的无溶剂条件是所制备催化剂的结果。反应如何被催化剂触发由 IR 确定。合成后的催化剂在五个循环后提供了 87.5% 的反应产率。采用傅里叶变换红外