61122-85-8Relevant academic research and scientific papers
Copper-catalyzed oxidative multicomponent reaction: Synthesis of imidazo fused heterocycles with molecular oxygen
Li, Xianwei,Wang, Tianzhang,Lu, Yu-Jing,Ji, Shaomin,Huo, Yanping,Liu, Bifu
, p. 7143 - 7151 (2018)
An oxidative cascade that involves multicomponent reaction comprising a terminal alkyne, 2-amino N-heterocycle, benzyl or allylic bromide with molecular oxygen, delivering densely functionalized imidazo fused heterocycles, is described. This reaction features a cheap catalyst, a green oxidant, and readily available starting materials, which make the overall synthesis applicable in the quick access to relevant pharmaceutical molecules with imidazole derived heterocycles.
A transition metal-free cascade reaction using heterogeneous tin(IV)oxide catalyzed and iodine promoted synthesis of 3-aroylimidazo[1,2-a]pyridines
Jadhav, Nirajkumar H.,Sakate, Sachin S.,Shinde, Dnyaneshwar R.,Chaskar, Manohar G.,Pawar, Ramdas A.
, (2020/07/30)
The cascade synthesis of 3-aroylimidazo[1,2-a]pyridines using chalcones and 2-aminopyridine was achieved over the SnO2/I2 catalytic system in toluene at ambient air atmosphere. The catalyst shows high activity towards the broad subst
Superparamagnetic nanoparticle-catalyzed coupling of 2-amino pyridines/pyrimidines with trans-chalcones
Nguyen, Oanh T. K.,Ha, Pha T.,Dang, Ha V.,Vo, Yen H.,Nguyen, Tung T.,Le, Nhan T. H.,Phan, Nam T. S.
, p. 5501 - 5511 (2019/03/02)
An aerobic coupling of 2-aminopyrimidines or 2-aminopyridines with trans-chalcones to afford aroylimidazo[1,2-a]pyrimidines and aroylimidazo[1,2-a]pyridines is reported. Reactions proceed in the presence of CuFe2O4 superparamagnetic
Copper-Catalyzed C-N Bond Formation via C-H Functionalization: Facile Synthesis of Multisubstituted Imidazo[1,2- a ]pyridines from N -(2-Pyridinyl)enaminones
Cacchi, Sandro,Ciogli, Alessia,Demitri, Nicola,Fabrizi, Giancarlo,Ghirga, Francesca,Goggiamani, Antonella,Iazzetti, Antonia,Lamba, Doriano
, p. 3513 - 3519 (2018/09/04)
An efficient, new copper-catalyzed approach to the construction of the multisubstituted imidazo[1,2- a ]pyridine skeleton from N -(2-pyridinyl)enaminones has been developed.
Iodine-promoted oxidative coupling reaction: a simple and efficient process to access imidazo[1,2-a]pyridines from 2-aminopyridines and chalcones
Xing, Meng-Ming,Xin, Ming,Shen, Chao,Gao, Jian-Rong,Jia, Jian-Hong,Li, Yu-Jin
, p. 4201 - 4204 (2016/07/06)
A unique and efficient approach has been developed for the synthesis of substituted imidazo[1,2-a]pyridines with aminopyridines and chalcones via a one-pot I2-induced aerobic oxidative coupling. The reported reaction proceeded though a tandem Michael addition followed by an intramolecular oxidative amination with high regioselectivity, yields and good functional group tolerance.
Iodine/Copper Iodide-Mediated C-H Functionalization: Synthesis of Imidazo[1,2-a]pyridines and Indoles from N-Aryl Enamines
Liu, Jing,Wei, Wei,Zhao, Ting,Liu, Xuanyu,Wu, Jie,Yu, Wenquan,Chang, Junbiao
, p. 9326 - 9336 (2016/10/14)
A practical intramolecular C-H functionalization reaction of N-aryl enamines has been carried out with molecular iodine (I2) as the sole oxidant in the presence of copper iodide (CuI). The efficient and versatile synthetic method described here
Copper-catalyzed intramolecular oxidative amination of enaminone C-H bond for the synthesis of imidazo[1,2-a]pyridines
Wan, Jie-Ping,Hu, Deqing,Liu, Ying,Li, Luyao,Wen, Chengping
, p. 2880 - 2883 (2016/06/14)
The intramolecular C-N bond forming cross coupling reactions on the enaminones has been achieved for the synthesis of imidazole[1,2-a]pyridines via copper-catalyzed C(sp2)-H amination. This protocol provides a new route for the synthesis of 2-u
Copper catalyzed aerobic oxidative cyclization and ketonization: One pot synthesis of benzoimidazo[1,2-: A] imidazolones
Selvaraju, Manikandan,Ye, Tzuen-Yang,Li, Chia-Hsin,Ho, Pei-Heng,Sun, Chung-Ming
supporting information, p. 6621 - 6624 (2016/06/01)
A highly efficient synthesis of benzoimidazo[1,2-a]imidazolone through a novel oxidative 5-exo-dig cyclization-ketonization cascade of 2-aminobenzimidazole, aldehyde and terminal alkyne has been explored under aerobic conditions. The reaction proceeds thr
CBr4 Mediated Oxidative C-N Bond Formation: Applied in the Synthesis of Imidazo[1,2-α]pyridines and Imidazo[1,2-α]pyrimidines
Huo, Congde,Tang, Jing,Xie, Haisheng,Wang, Yajun,Dong, Jie
supporting information, p. 1016 - 1019 (2016/03/15)
The carbon tetrabromide mediated oxidative carbon-nitrogen bond formation of 2-aminopyridines or 2-aminopyrimidines with β-keto esters or 1,3-diones, leading to a variety of complex imidazo[1,2-α]pyridines or imidazo[1,2-α]pyrimidines, is reported. The re
Copper supported on H+-modified manganese oxide octahedral molecular sieves (Cu/H-OMS-2) as a heterogeneous biomimetic catalyst for the synthesis of imidazo[1,2-a]-N-heterocycles
Meng, Xu,Zhang, Jinqi,Chen, Baohua,Jing, Zhenqiang,Zhao, Peiqing
, p. 890 - 896 (2016/02/18)
Copper supported on acid-modified manganese oxide octahedral molecular sieves (Cu/H-OMS-2) was prepared and found to be a versatile catalyst for the oxidative synthesis of 3-aroylimidazopyridines with a broad substrate scope. Cu/H-OMS-2 that was character
