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Of nitrogen-containing Functions

TTie introduction of nitrogen-containing functions (e.g., NMe) into the crown ether constitution has a profound effect (73) on both the structures and strengths of molecular complexes with organic substrates. [Pg.219]

Aside from the various classes of nitrogen containing functional groups with which we are familiar, entire fields of study have developed based on nitrogen-containing compounds. These fields include alkaloids, peptides and/or proteins, and nucleic acids. For purposes of study by NMR, the nucleic acids are a favorite subject because not only is nitrogen ubiquitous in these compounds but so is phosphorus (see Section 6.5). [Pg.317]

The most widely used method for the substitution of nitrogen-containing functional groups by fluorine is the thermal or photochemical decomposition of diazonium salts, the Baltz-Schiemann reaction (see Section 1.1.8 ). [Pg.269]

Fluorinations of other functionalities containing C = N bonds, such as 2//-azirines and imines, are included in this section. Certain 2Ff-azirines and imines yield a-fluoro ketones. With other 2Ff-azirines, /i,/(-difluoro amines are the main reaction products. In a strict sense, these reactions cannot be considered as examples of substitution of nitrogen-containing functional groups no substitution takes place when /S. -difluoro amines are the reaction products. However, these methods have been included. [Pg.269]

Hydrogenation of Nitrogen-Containing Functions by Various Transition Metal Clusters... [Pg.68]

Oxidation of alcohol, carbonyl and acid functions, hydroxylation of aliphatic carbon atoms, hydroxylation of alicyclic carbon atoms, oxidation of aromatic carbon atoms, oxidation of carbon-carbon double bonds, oxidation of nitrogen-containing functional groups, oxidation of silicon, phosphorus, arsenic and sulfur, oxidative N-dealkylation, oxidative O- and S-dealkylation, oxidative deamination, other oxidative reactions... [Pg.723]

Reduction of carbonyl groups, reduction of alcoholic groups and carbon-carbon double bonds, reduction of nitrogen-containing functional groups, other reductive reactions... [Pg.723]

Figure 2.2 Types of nitrogen-containing functionalities on the carbon materials (a) pyrrole- like group (b) nitrile (c) secondary amine (d) nitro group (e) nitroso group (f) terciary (g) amine (h) pyridine-like group (i) imine (j) amide (k) lactam (1) pyri-done (m) quaternary amine. Figure 2.2 Types of nitrogen-containing functionalities on the carbon materials (a) pyrrole- like group (b) nitrile (c) secondary amine (d) nitro group (e) nitroso group (f) terciary (g) amine (h) pyridine-like group (i) imine (j) amide (k) lactam (1) pyri-done (m) quaternary amine.
Catalytic oxidation of hydrogen sulfide or methyl mercaptan is also enhanced in the presence of nitrogen-containing functionalities [57], Besides providing the basic pH needed for effective dissociation of HS , they were proposed to activate oxygen via formation of superoxide ion, which participates in the oxidation of thiolate ions to sulfur and sulfuric acid [95],... [Pg.81]

Some important transformations of nitrogen containing functional groups. [Pg.102]

It was observed that ammonium cations in the tanplate participated in the reactions during the carbonization process, leading to the formation of nitrogen-containing functional groups in the resultant carbon [74],... [Pg.68]

Jansen, RJJ van-Bekkum, H. XPS of nitrogen-containing functional groups on activated carbon. Carbon, 1995, 33, 1021-1027. [Pg.270]

S. Kundu, W. Xia, W. Busser, M. Becker, D.A. Schmidt, M. Havenith, M. Muhler, The formation of nitrogen-containing functional groups on carbon nanotube surfaces a quantitative XPS and TPD study, Phys. Chem. Chem. Phys. 12 (2010) 4351 59. [Pg.304]

Azides are useful intermediates for synthesis of various kinds of nitrogen-containing functional groups. They undergo cycloaddition reactions as will be discussed in Section 7.1.5 and can also easily be reduced to primary amines. Azido groups are usually introduced into aliphatic molecules by nucleophilic substitution. [Pg.106]


See other pages where Of nitrogen-containing Functions is mentioned: [Pg.313]    [Pg.313]    [Pg.88]    [Pg.88]    [Pg.73]    [Pg.313]    [Pg.41]    [Pg.67]    [Pg.246]    [Pg.41]    [Pg.67]    [Pg.270]    [Pg.385]    [Pg.385]    [Pg.119]    [Pg.426]    [Pg.436]    [Pg.436]    [Pg.1357]    [Pg.434]    [Pg.141]    [Pg.783]   
See also in sourсe #XX -- [ Pg.313 , Pg.314 ]

See also in sourсe #XX -- [ Pg.313 , Pg.314 ]

See also in sourсe #XX -- [ Pg.313 , Pg.314 ]




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