- Novel nonmetal catalytic bidirectional selective reduction method of tertiary aromatic amide
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The invention relates to a novel effective bidirectional selective environment-friendly method for hydrosilation reduction of tertiary aromatic amide and an organic silicon reagent. The method comprises the following steps: selecting a nonmetal catalytic system, and selectively preparing a secondary or tertiary organic amine compound by successively catalyzing tertiary aromatic amide and cheap PHMS or triethoxysilane under a mild condition. By adopting the method, the bidirectional selective reduction of the tertiary aromatic amide is realized by innovatively utilizing an electronic effect and steric hindrance difference of an organic silicon reagent at first time, so that a brand new strategy is provided for the reduction of amide and derivative of the amide, the defects of the traditional method that the substrate functional group is poor in compatibility, the production cost is high and the like can be overcome, and the application prospect of the amine compound prepared in industrial production or laboratory is promising.
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Paragraph 0086; 0087; 0088; 0089
(2017/10/22)
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- Reductive cleavage of amides to alcohols and amines catalyzed by well-defined bimetallic molybdenum complexes
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Triple bonds do it! The molybdenum-catalyzed Ci-N bond cleavage of organic amides with hydrosilanes to produce alcohols and amines has been investigated. This work complements previously established protocols that lead to the cleavage of the Ci-O bond. Modified triply bonded dimolybdenum(III) alkoxides have been found to be crucial for tuning the selectivity to Ci-N bond cleavage (see figure). Copyright
- Krackl, Sebastian,Someya, Chika I.,Enthaler, Stephan
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supporting information
p. 15267 - 15271
(2013/01/15)
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- Ruthenium-catalyzed intermolecular coupling reactions of arylamines with ethylene and 1,3-dienes: Mechanistic insight on hydroamination vs ortho-C-H bond activation
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(Chemical Equation Presented) The cationic ruthenium complex [(PCy 3)2(CO)(Cl)Ru=CHCH=C(CH3)2] +BF4- was found to be an effective catalyst for the coupling reaction of aniline and ethylene to form a ~1:1 ratio of N-ethylaniline and 2-methylquinoline products. The analogous reaction with 1,3-dienes resulted in the preferential formation of Markovnikov addition products. The normal isotope effect of kNH/kND = 2.2 (aniline and aniline-d7 at 80°C) and the Hammett ρ = -0.43 (correlation of para-substituted p-X-C6H4NH2) suggest an N-H bond activation rate-limiting step for the catalytic reaction.
- Yi, Chae S.,Sang, Young Yun
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p. 2181 - 2183
(2007/10/03)
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