Formula: C12H8Br2. In 2020 ISCIENCE published article about C-H BOND; ACTIVATION; IMINES; KETIMINES; FUNCTIONALIZATIONS; CYCLIZATION; REACTIVITY; ARYLATION; INSERTION; REAGENTS in [Zhang, Saisai; Chang, Zhenbang; Qiao, Xinxin; Xiong, Heng-Ying; Zhang, Guangwu] Henan Univ, Coll Chem & Chem Engn, Inst Organ Funct Mol, Kaifeng 475004, Peoples R China; [Liu, Xun-Yong] Ludong Univ, Sch Chem & Mat Sci, Yantai 264025, Peoples R China in 2020, Cited 70. The Name is 4,4′-Dibromobiphenyl. Through research, I have a further understanding and discovery of 92-86-4.
Transition metal catalyzed [3 + 2] annulation of imines with double bonds via directed C-H activation offers a direct access to amino cyclic motifs. However, owing to weak coordination and steric hindrance, trifluoromethylated ketimines have been an unaddressed challenge for TM-catalyzed annulations. Here, a rhenium-catalyzed [3 + 2] annulation of trifluoromethylated ketimines with isocyanates via C(sp(2))-H activation has been disclosed. This approach provides an efficient platform for rapid access to a privileged library of CF3-containing iminoisoindolinones and polyamides by utilizing challenging CF3-ketimines as the annulation component. The capability of gram scale synthesis, the post-functionalization of the cyclization adduct, the derivation of complex natural molecules and the facile synthesis of polyamides highlight a diversity of synthetic potential of the current methodology.
Formula: C12H8Br2. About 4,4′-Dibromobiphenyl, If you have any questions, you can contact Zhang, SS; Liu, XY; Chang, ZB; Qiao, XX; Xiong, HY; Zhang, GW or concate me.
Reference:
Benzoxazole – Wikipedia,
,Benzoxazole | C7H5NO – PubChem