- Method for selectively preparing N-monomethylamine compound
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The invention discloses a method for selectively preparing an N-monomethylamine compound. The method takes an amine compound, formaldehyde and H2 as reaction raw materials; the raw materials react in a reaction medium in the presence of a compound catalyst at 30 DEG C-180 DEG C for 2h-48h, so as to obtain the N-monomethylamine compound; and the compound catalyst is composed of oxides of at least two of the following metal or oxides of least one of the following metal and at least one metal simple substance: aluminum, copper, nickel, cobalt and iron. According to the method for preparing the N-monomethylamine compound, the conversion ratio and the selectivity of N-monomethylamine are relatively high; the H2 is used as a reducing agent and is clean, cheap and environment-friendly; the catalyst utilized by the method is cheap, simple to prepare and high in catalysis efficiency; and the method has mild preparation and reaction conditions and the catalyst has no corrosiveness, is easy to separate and can be repeatedly used.
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Paragraph 0034-0035
(2017/08/29)
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- The Chemistry of N-Substituted Benzotriazoles. Part 14. Novel Routes to Secondary and Tertiary Amines and to N,N-Disubstituted Hydroxylamines
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Tertiary amines of types R4R3CHNR1R2 (2), (R2CH2)2NR1 (10) and 11, or (R2CH2)3N (12), secondary amines of type (R2CH2)2NH (8), and N,N-disubstituted hydroxylamines of type (R2CH2)2NOH (9), are prepared in high yield by the action of Grignard reagents or sodium borohydride on easily available N,N-dialkyl-N-amines (1) or tris(benzotriazolylmethyl)amine (7), on bis(benzotriazolylmethyl)amines (3), (5), and (6), and on N,N-bis(benzotriazolylmethyl)hydroxylamine (4), respectively.
- Katritzky, Alan R.,Yannakopoulou, Konstantina,Lue, Ping,Rasala, Danuta,Urogdi, Laszlo
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p. 225 - 233
(2007/10/02)
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