Amines examples

Coordination Compounds. Palladium forms numerous complexes with ammonia and with simple amines. Examples ate [Pd(NH2)4] ... 

Dyes with better wetfastness and better affinity in neutral or weakly acid bath have been developed by introducing more hydrophobic amines. Examples are Cl Acid Blue 129 [6397-02-0] (120) Cl 62058), Cl Acid Blue 126 [72152-61-5] (121) (130), and Cl Acid Blue 230 [12269-82-8] (122) Cl 62075). However, uniform leveling cannot be obtained with these dyes. 

Distinguish between alcohols, ethers, aldehydes, ketones, carboxylic acids, esters, and amines. (Example 22.6 Problems 15-18) 16,18... 

Aromatic amination by replacement of halogens with amines (example... 

Interestingly, the reaction is clearly sensitive to substituent the absence of a carbonyl present in the reactant amide (95) above, with slight changes in electronic or conformational effects enough to perturb reaction outcome [84]. In the amine example below, the substituted pyrollidine (96) was not isolated, while a slight increase in chain length facilitated the desired cyclization to 97 (Scheme 37). 

Scheme 7.10 The resolution of chiral amines examples of the substrate range used by the BASF process demonstrated on a multi-ton scale.

Coordination Compounds. Palladium forms numerous complexes with ammonia and with simple amines. Examples are [Pd(NH3)4]2+ [15974-14-8], [PdCl(dien)]+ [17549-31-4], cis-[PdCL (NH3)2] [15684-18-1], and trans-[PdC (NH3)2] [13782-33-7]. Monoammine complexes such as [PdCl3 (NH3)] [15691-32-4] are stable but less common. Examples of aromatic amine complexes include trans- [PdCf (pyr)2] [14052-12-1], [PdCl2(bipy)] [14871-92-2], and nucleosides such as [PdCl(dien)(guanosine)]+ [73601-42-0] (193). Complexes of Pd(IV) such as [PdCl2(NH3)4]2+ [70491-81-5] and [PdCl4(bipy)] [57209-01-5] may be prepared by chlorine oxidation of the corresponding Pd(2+). The aromatic amine Pd(IV) complexes are more stable than ammine and aliphatic amine species, which are reduced to Pd(II) in water or thermally (194). 

Tricyclic antidepressants (TCAs) are the oldest antidepressants. TCAs consist of a seven-membered ring both fused with two benzenes and bearing a tethered amine. Examples include imipramine (A.53) and amitriptyline (A.54) (Figure A.16). TCAs primarily act by blocking the reuptake of NE from the synaptic junction and prolonging the time of action of NE. TCAs, however, also affect the action of 5-HT and DA and therefore have more side effects than most antidepressants. 

Since Nl and N4 are always provided by ammonia or an amine, examples in this small but significant category are classified according to the nature of the C—C synthons (which are identical in all examples reported recently). 

Imidoyl iodides. Reaction of oxime mesylates (or carbonates) of ketones with (C2H5)2A11 effects Beckmann rearrangement to imidoyl iodides, which can be directly alkylated with Grignard reagents and then reduced (DIBAH) to a-alkylated amines. Examples ... 

There are a number of variations on this route, depending upon how the reduction is catalysed. The general principle is that the ketone is reacted with ammonia to form the imine, which is then reduced under high temperature and pressure to form the amine. Examples of impurities from this route include ketimines... 

The amines are derivatives of ammonia with the general formula R3N, where R can represent a hydrocarbon group or hydrogen. If only one hydrogen atom of ammonia is replaced by a hydrocarbon group, the result is a primary amine. Examples are ethylamine and aniline ... 

H. C. Brown showed that the reagent reacts readily with an alkylborane to produce the corresponding amine. Examples ... 

REACTION THE SULPHONATION OF AN AMINE Example Sulphanilic Add from Aniline and Sulphuric Acid1... 

Derivatization reactions, often selective for amine type (primary, secondary, tertiary), have also been used to improve the detection and separation of these amines. Examples of derivatization reaction for GC determination of amines are shown in Table 11.5. 

Alkylation of nzfrfdfites amine sywArsis. N-Sub tuted aziridincs (alkj benzyl, silyl, Boc) react with lithium dialkykuprates in the presence of BF ethcrate (excess) with opening of the nng to give primary or secondary amines. Examples ... 

Reduction of amides. The Borch method for reduction of sec- and t-amides to amines (2, 430-431) is improved by use of NaBH4 and SnCU-2(C2H5)20 in the ratio 4 1. Under these conditions even primary amides are reduced to amines. Examples ... 

The classical methods for quantitative analysis of carbohydrates were based mainly on the formation of colored products on treatment of the analytes with strong mineral acids and condensation of the resulting 2-furaldehyde (furfural) derivatives with a suitable chromogenic reagent (usually a phenol or aromatic amine). Examples include the well-known procedmes involving the use of sulfuric acid with phenol, orcinol, cysteine, or anthrone. 

However, ion chromatography has an advantage over spectroscopic techniques for cation analysis in the area of metal speciation. Moreover, ion chromatography is particularly beneficial for the simultaneous determination of cations and ammonia in wastewater containing amines. Examples of anion and cation chromatograms are given in Figs. 1 and 2, respectively. 

Examples nitrosamines, polycyclic aromatic hydiocartxnis, aromatic amines Examples chlrainated substances, organochlorine pesticides, hormones, barbiturates... 

Not only aldehydes (cf. 5.3.1.1), but also amines are formed in the Strecker reaction (cf. 4.2.4.4.T). The odor thresholds of these amines (examples in Table 5.26) are pH dependent. The enzymatic decarboxylation of amino acids produces the same amines as the Strecker reaction the precursors are shown in Table 5.26. Both reactions take place e. g. in the production of cocoa, but the Strecker... 

In addition to the usual C, H, and O, amines contain nitrogen (N). Amines are derived from ammonia (NHj) by substituting an alkyl group for one or more of the hydrogen atoms on ammonia. To name an amine, the alkyl groups are named, followed by the word amine. Examples include methyl amine, dimethyl amine, methyl ethyl amine, and trimethyl amine. Like ammonia, amines are weak bases. 

The solvent extracts of resins may contain antioxidants, some of which may be based on aromatic amines, examples of antioxidants being derivatives... 

Subsequent sequential treatment of the resulting crude reaction mixtures with TiCLt, primary or secondary amines and NaBH3CN rapidly converts the [ C]ketones into the corresponding secondary and tertiary amines . Examples of compounds prepared this way include 48-49. 

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