72235-52-0Relevant articles and documents
Hydrogen Bond Directed Photocatalytic Hydrodefluorination and Methods of Use Thereof
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, (2021/01/22)
Methods of synthesizing compounds comprising fluorinated aryl groups are disclosed, wherein said methods utilize hydrogen bond directed photocatalytic hydrodefluorination.
Novel route for preparing dolutegravir key intermediate 2,4-difluorobenzylamine
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, (2018/11/22)
The invention discloses a production route which is concise and green in route, low in cost and easy to industrialize to prepare 2,4-difluorobenzylamine. The route comprises the following four steps:a) by taking m-difluorobenzene as an initial raw material, under catalysis of lewis acid, carrying out a Foucault alkylation reaction with ethylene oxide so as to prepare an intermediate 2,4-difluorobenzene ethanol; b) carrying out a second step of reactions on the product of the step a) without separation or purification, and oxidizing the 2,4-difluorobenzene ethanol to generate 2,4-difluorobenzene phenylacetic acid; c) enabling the product 2,4-difluorobenzene phenylacetic acid of the step b) with sulfoxide chloride and an ammonia gas to react so as to prepare 2,4-difluorophenylacetamide; d)under induction of bromine, enabling the product 2,4-difluorophenylacetamide of the step c) to react with a sodium hypochlorite solution, and carrying out Hofmann degradation, thereby obtaining a target product 2,4-difluorobenzylamine. The preparation method disclosed by the invention is simple and easy in raw material obtaining, concise in route, green and environmentally friendly, low in cost and easy in industrial production.
Selective ruthenium-catalyzed transfer hydrogenations of nitriles to amines with 2-butanol
Werkmeister, Svenja,Bornschein, Christoph,Junge, Kathrin,Beller, Matthias
supporting information, p. 4437 - 4440 (2013/04/23)
Transfer your hydrogen: Fast and general transfer hydrogenation of nitriles to form primary amines is possible with a homogeneous Ru/1,4- bis(diphenylphosphino)butane (DPPB) catalyst (see scheme). The use of 2-butanol as the hydrogen-transfer reagent is essential for the selective reduction of aromatic, heteroaromatic, and aliphatic nitriles with this system. Copyright