Compounds reaction with amines

X-ray photoelectron spectroscopy, 139 Diazo ligands, 100 Dicarbonyl compounds reaction with amines aza macrocycles from, 902... 

The sulfonyl chloride group is the cure site for CSM and determines the rate and state of cure along with the compound recipe. It is less stable than the Cl groups and therefore often determines the ceiling temperature for processing. The optimum level of sulfonyl chloride to provide a balance of cured properties and processibiUty is about 2 mol % or 1—1.5 wt % sulfur at 35% Cl. It also undergoes normal acid chloride reactions with amines, alcohols, etc, to make useful derivatives (17). 

Where direct amination of chloro compounds has proved unsatisfactory, 4-alkoxy or 4-phenoxy intermediates have sometimes been used for reactions with amines or hydrazine. 

The 11-chloro derivatives 7 were converted to the 11-amino compounds 8 by reaction with amines, exactly as described for the dibenzoxazepine analogs in Section 4.1.1.3.2.4.1.43 Some examples are listed below. Yields were not reported. 

Z)-compounds are formed in reactions with hydroxide, methoxide, cyanide, and sulfite ions, whereas (ii)-compounds are formed in most reactions with amines (formation of triazenes) and with diazo coupling components such as phenols and aromatic tertiary amines. 

The same dangerous reactions occur with these compounds as with amines, and are even more dangerous Hydrazines are very strong reducing agents and the fact that the weak N-N bond is present makes them rather unstable. 

Fluorobenzene-type compounds have been used as functional groups in homobifunctional crosslinking agents (Chapter 4, Section 4). Their reaction with amines involves nucleophilic displacement of the fluorine atom with the amine derivative, creating a substituted aryl amine bond (Reaction 9). Detection reagents incorporating reactive aryl chemistry include 2,4-dinitrofluorobenzene and trinitrobenzenesulfonate (Eisen et al., 1953). These compounds form... 

Bis(benzotriazol-lyl)methanethione 974 is easily prepared from thiophosgene and l-(trimethylsilyl)benzotriazole <1978JOC337>. In reactions with thiols and triethylamine, thiones 974 are converted to derivatives 973 in modest yields the main side products result from nucleophilic attacks of the thiolate anions on the thione sulfur atom to produce disulfides <2005JOC7866>. In reactions with amines, compounds 974 are smoothly converted to l-(thiocarbamoyl)benzotriazoles 975 <2004JOC2976>. Substitution of one of the benzotriazolyl groups in 974 by phenolate anions yields l-(aryloxythioacyl)benzotriazoles 978 (Scheme 161) <2005JOC7866>. 

Reaction with ammonia yields 5-cyanotetrazole, a nitrogen heterocychc ring compound. Reactions with alkyl amine, RNH2, yield dialkyloxalamidines RNHC(=NH)CH(=NH)NR with dialkylamine, R2NH, the product is N,N-diaIkylcyanoformamidine ... 

The aldehyde moiety of 50 can be condensed with either amines or active methylene compounds. In the case of reactions with amines, the aldehyde 50 (presumably obtained by reduction of the cyano group with diisobutyl-aluminium hydride (DIBAL-H)) forms simple Schiff bases 51 (Equation 20) <1998J(P1)3557>. 

Dicyano-l,3-dimethyluracil (156) undergoes substitution reactions with amines or sodium methoxide to yield 157 (R = NHR or OCH3). Compounds 157 reacted with hydrazines to yield the hydrazino derivative 158, which readily cyclized to the pyrazolo[3,4-[Pg.343]

The idea of the decisive role of complexing reactions makes possible to unterstand such peculiarities of epoxy compound reactions with primary and secondary amines as a rather unusual, from the kinetic point of view, simultaneous occurrence of the autoacceleration and autoinhibition reactions, catalytic and inhibitive effects of various solvents, and obvious ortho-effect of a number of substituents in aromatic amines, the influence of tertiary amines as additives and some other 5,6,13.14.30,... 

Thermodynamics of the epoxy compound curing with amines is interesting from two points of view. It concerns all the numerous elementary reactions resulting in the formation of H-complexes in the reaction system and the process as a whole, as well. 

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