Molybdenum-Catalyzed Deoxygenation of Heteroaromatic N- Oxides and Hydroxides using Pinacol as Reducing Agent
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چکیده
منابع مشابه
Pinacol as a New Green Reducing Agent: Molybdenum- Catalyzed Chemoselective Reduction of Sulfoxides and Nitroaromatics
Pinacol is described as a new chemoselective and environmentally benign reducing agent for sulfoxides and nitroaromatics assisted by readily available dichlorodioxomolybdenum(VI) complexes as catalysts. A wide range of substrates including those bearing challenging functional groups have been efficiently and selectively reduced being acetone and water the only byproducts of these reactions.
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Functionalisation of quinoline N-oxide was investigated using phophazene base as a catalyst; alkynylation and heteroarylation at 2-position were successfully achieved via nucleophilic addition-elimination process.
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Article history: Received 3 November 2008 Revised 2 December 2008 Accepted 9 December 2008 Available online 16 December 2008
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Herein, a practical and mild method for the deoxygenation of a wide range of benzylic aldehydes and ketones is described, which utilizes heterogeneous Pd/C as the catalyst together with the green hydride source, polymethylhydrosiloxane. The developed catalytic protocol is scalable and robust, as exemplified by the deoxygenation of ethyl vanillin, which was performed on a 30 mmol scale in an ope...
متن کاملRecent Developments in the Chemistry of Heteroaromatic N-Oxides
Abstract Selected developments in the chemistry of heteroaromatic N-oxides since 2001 are presented in this review. The use of these Noxides, both in late-transition-metal-catalyzed oxidations of carbon– carbon triple bonds and in regioselective C–H functionalizations of the heteroarene, are contemporary topics of interest and the focus of the discussion.
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ژورنال
عنوان ژورنال: Advanced Synthesis & Catalysis
سال: 2017
ISSN: 1615-4150
DOI: 10.1002/adsc.201700071