- Consecutive β,β′-Selective C(sp3)?H Silylation of Tertiary Amines with Dihydrosilanes Catalyzed by B(C6F5)3
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Tris(pentafluorophenyl)borane has been found to catalyze the two-fold C(sp3)?H silylation of various trialkylamine derivatives with dihydrosilanes, furnishing the corresponding 4-silapiperidines in decent yields. The multi-step reaction cascade involves amine-to-enamine dehydrogenation at two alkyl residues and two electrophilic silylation reactions of those enamines, one inter- and one intramolecular.
- Fang, Huaquan,Xie, Kaixue,Kemper, Sebastian,Oestreich, Martin
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supporting information
p. 8542 - 8546
(2021/03/08)
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- Simple Metal-Free Direct Reductive Amination Using Hydrosilatrane to Form Secondary and Tertiary Amines
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This work describes the use of cheap, safe, and easy-to-handle hydrosilatrane as the reductant in direct reductive amination reactions. This efficient method enables a facile, metal-free access to secondary and tertiary amines from a wide range of aldehydes and ketones, with the synthesis of tertiary amines requiring no additives at all. This reaction demonstrates excellent functional group tolerance, chemoselectivity, and scalability. (Figure presented.).
- Varjosaari, Sami E.,Skrypai, Vladislav,Suating, Paolo,Hurley, Joseph J. M.,Lio, Ashley M. De,Gilbert, Thomas M.,Adler, Marc J.
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supporting information
p. 1872 - 1878
(2017/06/09)
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- Three nuclear hyamines template synthesis and molecular sieve solid acid preparation and application
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The invention relates to a synthesis method of a novel trinuclear aromatic ring quaternary ammonium salt template agent SDAIII, a preparation method of a novel HZSM-5 molecular sieve, and an application of the molecular sieve to study of the catalytic performance in the condensation reaction between ethylene glycol and cyclohexanone after the molecular sieve is modified by chlorosulfonic acid. The novel molecular sieve has the main characteristics of high catalytic activity, good stability, large number of reuse, convenience in catalyst separation, simplicity in after-treatment and little pollution, is efficient environment-friendly solid acid, and is expected to be developed into a green catalyst commonly used in laboratories and industrial production.
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- Amines and Ammonium Compounds. CCXXVI. Stevens Rearrangement of Bisammonium Salts Containing a p-Xylylene Moiety
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p-Xylylenebisammonium salts containing phenacyl or acetonyl groups undergo Stevens rather than Sommelet rearrangement, regardless of reaction conditions.
- Karapetyan,Kocharyan,Babayan
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p. 1146 - 1149
(2007/10/03)
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