Hydrazones hydrazines

Oxidation of Hydrazines, Hydrazones, and Hydroxylamines 11 N,2I Af-Dihydro-elimination... 

A variety of macrocyclic complexes which have adjacent nitrogen atoms (cyclic hydrazines, hydrazones or diazines) are formed by condensations of hydrazine, substituted hydrazines or hydrazones with carbonyl compounds. The reactions parallel in diversity those of amines, but are often more facile since the reacting NH2 groups is generally not coordinated and the electrophile is thus not in competition with the metal ion. The resulting macrocycles may be capable of coordination isomerism, since either of the adjacent nitrogen atoms can act as donor atom. 

Know the meaning of imine, hydroxylamine, oxime, hydrazine, hydrazone, phenylhydrazine, phenylhydrazone, semicarbazone. 

N-Arylaminophthalimides, hydrazines, hydrazones, and N-H containing heterocycles are N-arylated by combined use of Ar3Bi and Cu(OAc)2 (Scheme 14.134) [281] in which Cu(OAc)2 oxidizes Ar.l i to Ar jl i(OAc)2 and catalyzes the arylation via transmetalation (Section 14.3.4.2). The Cu(OAc)2-promoted N-arylation of amides, sulfonamides, ureas, carbamates, and anilines with ArsBi proceeds efficiently in the presence of EtsN or pyridine (Scheme 14.135) [282]. N-Arylation occurs selectively on the primary amino group of aminobenzanilides (Scheme 14.136) [283]. A variety of amines are N-alkylated in moderate yields by use of alkylbismuthanes assisted by Cu(OAc)2 [284]. 

Hydrazines. Hydrazones, Osazones, and Related Heterooycles Aldose-aminoguanidlne condensation products have been prepared and... 

Reaction of sodium hydrazide with ethylene derivatives Addition and hydrazinolysis Hydrazines, hydrazones, and hydrocarbons ... 

Table 7.30. J Coupling constants of hydrazines, hydrazones and azines...

The reaction of superoxide with hydrazines, hydrazones and related compounds. 

Potassium superoxide dissolved in benzene witli the aid of 18-crown-6 was shown to oxidize hydrazines, hydrazones and related compounds into a variety of products. The products resulted from oxidation, dimerization and condensation. A mechanism is proposed to account for the products. 

Several classes of hydrazines have been prepared by a variety of reductive procedures of iV-nitrosoamines and hydrazones of various carbonyl compounds. The latter procedure is of particular value, since by the judicious selection of the carbonyl compound and of a substituted hydrazine, hydrazones may be prepared which can lead to new hydrazines with up to three different substituents. 

Nucleoside, nucleotide PorphyrinHr Hydrazines, hydrazones Arylamines... 

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