151055-86-6Relevant articles and documents
Transition-metal-free insertion of benzyl bromides into 2-(1H-benzo[d]imidazol-1-yl)benzaldehyde: One-pot switchable syntheses of benzo[4,5]imidazo[1,2-a]quinolin-5(7H)-ones and 3-arylquinolin-4-ones mediated by base
Xu, Huayan,Xu, Liang,Luo, Xiaowei,Wang, Junfeng,Zhou, Xuefeng,Yang, Bin,Li, Ding,Luo, Zaigang,Liu, Yonghong,Liao, Shengrong
, p. 2785 - 2796 (2019/04/13)
A transition-metal-free insertion of benzyl group between aldehyde and imidazole of 2-(1H-benzo[d]imidazol-1-yl)benzaldehyde was achieved for the first time. Two diverse sets of quinolin-4-one derivatives: benzo[4,5]imidazo[1,2-a]quinolin-5(7H)-ones (2) and 3-arylquinolin-4-ones (3) were synthesized based on identical starting materials 2-(1H-benzo[d]imidazol-1-yl)benzaldehydes (1) and benzyl bromides. In the preparations, two key intermediates I and II were involved and might be synthesized in situ through the reaction of an intra-Breslow intermediate with benzyl bromide via an enol attack in the presence of base or a NHC-based enamine attack in the absence of base, respectively, in which the intra-Breslow intermediate might function as a nucleophilic reagent by following two novel different pathways.
Magnetically retrievable lepidocrocite supported copper oxide nanocatalyst (Fe-CuO) for N-arylation of imidazole
Sivakami,Babu, S. Ganesh,Dhanuskodi,Karvembu
, p. 8571 - 8578 (2015/03/03)
A simple and efficient lepidocrocite-supported copper oxide catalyst (Fe-CuO) has been successfully prepared by a simple precipitation method in aqueous medium from readily available inexpensive starting materials and was used as a heterogeneous nanocatal
Silver(I)-promoted intramolecular addition of N-heterocyclic carbenes towards unsaturated esters in water
Shang, Xiaobo,Chen, Chao,Qiu, Huayu,Chen, Wanzhi
, p. 3073 - 3077 (2014/04/17)
Silver(I)-promoted intramolecular addition reaction between N-heterocyclic carbene and unsaturated esters in water is described. The reaction leads to 1H-imidazo[1,2-a]indole derivatives in moderate to excellent yields.