12082-42-7Relevant academic research and scientific papers
Copper-Catalyzed Electrochemical Selective B-H Oxygenation of o-Carboranes at Room Temperature
Au, Yik Ki,Lyu, Hairong,Quan, Yangjian,Xie, Zuowei
, p. 6940 - 6945 (2020)
Copper-catalyzed electrochemical selective cage B-H oxygenation of o-carboranes has been achieved for the first time. Under a constant electric current (4.0 mA) at room temperature, copper-catalyzed cross-coupling of carboranyl amides with lithium phenolates results in the formation of B(4,5)-diphenolated o-carboranes via direct B-H activation, whereas the use of lithium tert-butoxide affords B(4)-monooxygenated products. This reaction does not require any additional chemical oxidants and generates H2 and a lithium salt as byproducts. Control experiments indicated that a high-valent Cu(III) species is likely involved in the reaction process.
Fe-Catalyzed Intramolecular B-H/C-H Dehydrogenative Coupling: Synthesis of Carborane-Fused Nitrogen Heterocycles
Chen, Yu,Lyu, Hairong,Quan, Yangjian,Xie, Zuowei
, p. 4163 - 4167 (2021)
We disclose herein the first example of iron-catalyzed regioselective intramolecular C-H/B-H dehydrogenative coupling, affording unprecedented C,B-substituted carborane-fused phenanthroline derivatives. The 8-aminoquinoline type auxiliaries not only serve
8-Aminoquinoline as a bidentate traceless directing group for Cu-catalyzed selective B(4,5)-H disulfenylation of: O -carboranes
Chen, Yu,Quan, Yangjian,Xie, Zuowei
supporting information, p. 12997 - 13000 (2020/11/05)
A traceless bidentate directing group guided copper catalyzed direct cage B(4,5)-H disulfenylation of o-carboranes has been achieved, leading to a series of B(4,5)-disulfenylated o-carborane derivatives in high yields with excellent regioselectivity. The in situ departure of the 8-aminoquinoline bidentate auxiliary circumvents additional processes for directing group removal, thus enhancing the atom-/step-economy. This journal is
