Reaction of Carboranyl Lithium and 2,3-Dichloroquinoxaline to Synthesize Carborane-Fused N-Heteroaromatic

Organometallics, Год журнала: 2024, Номер 43(10), С. 1077 - 1084

Опубликована: Май 16, 2024

Nucleophilic substitution of B–H is an important strategy for the synthesis carborane derivatives. Although intermolecular nucleophilic has been widely explored, intramolecular rarely reported. Herein, we synthesized a novel carborane-fused N-heteroaromatic through transition-metal-free reaction between carboranyl lithium and 2,3-dichloroquinoxaline. Two C–Cl substitutions one with were involved in this transformation. Instead most electron-deficient B(3)–H vertex, selectively occurred on B(4)–H vertex. This method provides new ring compounds.

Язык: Английский

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Visible‐Light‐Promoted Palladium‐Catalyzed Cross‐Coupling of Iodocarboranes with Disulfides and Phenylselenyl Chloride^†

Chinese Journal of Chemistry, Год журнала: 2023, Номер 42(2), С. 129 - 134

Опубликована: Сен. 19, 2023

Comprehensive Summary This work describes a general method for the synthesis of series sulfenylated and selenylated carboranes at room temperature using readily available iodocarboranes as starting materials via boron‐centered carboranyl radicals. Such hypervalent boron radicals are generated by visible‐light‐promoted Pd(0)/Pd(I) pathway. They useful intermediates can be trapped disulfides phenylselenyl chloride convenient construction B—S/Se bonds.

Язык: Английский

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A Pd-catalyzed route to carborane-fused boron heterocycles

Chemical Science, Год журнала: 2024, Номер 15(27), С. 10392 - 10401

Опубликована: Янв. 1, 2024

A Pd-catalyzed cross-coupling system has been developed to achieve vicinal diamination of 9,10-dibromo-carborane with NH-heterocycles and anilines. These products can be further converted carborane-fused six- seven-membered heterocycles.

Язык: Английский

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Synthesis of ¹⁰B-Enriched Borane Lewis Base Adducts

Chinese Journal of Organic Chemistry, Год журнала: 2023, Номер 43(5), С. 1772 - 1772

Опубликована: Янв. 1, 2023

梁沙沙 a 马艳娜 * ,a 陈学年 ,a,b ( 郑州大学化学学院 郑州 450001) b 河南师范大学化学化工学院 河南新乡 453007) 摘要 天然硼中主要含有两种稳定同位素, 即硼-10 和硼-11, 丰度分别为 19.78%和 80.22%.其中, 富集的硼-10 同位素 在核工业以及放射治疗癌症等方面有重要应用. 因此

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Ir‐Catalyzed B(3)‐Amination of o‐Carboranes with Amines via Acceptorless Dehydrogenative BH/NH Cross‐Coupling

Chemistry - An Asian Journal, Год журнала: 2023, Номер 18(20)

Опубликована: Сен. 11, 2023

An efficient and convenient strategy for Ir-catalyzed selective B(3)-amination of o-carboranes with amines via acceptorless BH/NH dehydrocoupling was developed, affording a series B(3)-aminated-o-carboranes in moderate to high isolated yields H2 gas as sole by-product. Such an oxidant-free system endues the protocol sustainability, atom-economy environmental friendliness. A reaction mechanism Ir(I)-Ir(III)-Ir(I) catalytic cycle involving oxidative addition, dehydrogenation reductive elimination proposed.

Язык: Английский

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硼团簇及其材料化学研究进展(II): 硼碳团簇及化合物的相似性

Scientia Sinica Chimica, Год журнала: 2024, Номер unknown

Опубликована: Июль 8, 2024

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