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Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Применить Всего найдено 3. Отображено 3.
25-04-2023 дата публикации

Photochemical synthesis method of aryl formamide compound

Номер: CN116003280A
Автор: XU HUAJIAN, SHEN XIAO, XU JUN
Принадлежит:

The invention discloses a photochemical synthesis method of an aryl formamide compound, which comprises the following steps: by taking an aryl halide compound as a raw material, carrying out selective C-X bond formamidation on the aryl halide compound in the presence of formamide, a catalyst and alkali to obtain the aryl formamide compound with high selectivity. The method has the advantages of high efficiency, mild reaction conditions, convenience in operation, relatively short reaction time, relatively few byproducts and the like, and is suitable for large-scale production.

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Номер записи: 1
07-04-2023 дата публикации

Photochemical synthesis method of benzoazole-2-alkyl alcohol

Номер: CN115925651A
Автор: XU JUN, YAN ZHAOCHENG, LIU LI, XU HUAJIAN
Принадлежит:

The invention discloses a photochemical synthesis method of benzoazole-2-alkyl alcohol, which comprises the following steps: carrying out hydroxyl alkylation on a benzoazole-2-alkyl alcohol compound by taking a benzoazole-2-alkyl compound and aldehyde as raw materials and cheap and easily available tungstate as a photocatalyst, and separating and purifying to obtain the benzoazole-2-alkyl alcohol compound. The photochemical synthesis method has the characteristics of environmental friendliness, greenness, high efficiency, avoidance of operation conditions such as use of an organic solvent and inert gas protection, simple process and the like, and is suitable for large-scale production.

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Номер записи: 2
11-04-2023 дата публикации

Synthetic method of aryl boric acid ester compound

Номер: CN115947746A
Автор: XU HUAJIAN, XU JINGXIU, XU JUN
Принадлежит:

The invention discloses a synthesis method of an aryl boric acid ester compound, which comprises the following steps: by taking an aryl halide compound as a raw material, carrying out selective C-X bond boronation on the aryl halide compound in the presence of a catalyst, a boron reagent and alkali to obtain the aryl boric acid ester compound with high selectivity. The method has the advantages of high efficiency, mild reaction conditions, convenience in operation, relatively short reaction time, relatively few byproducts and the like, and is suitable for large-scale production.

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Номер записи: 3