2- -4-Amino-2-ethylpyridine

Chapter V. Quinaldine (V,2) 2-methyl-, 2 5-dimethyl- and 2-acetyl-thiophene (V,8-V,10) 2 5-dimethyl- and 2 4-dimethyl-dicarbethoxy-pyrrole (V,12-V,13) 2-amino- and 2 4-dimethyl-thiazole (V,1 V,16) 3 5-dimethyl-pyrazole (V,17) 4-ethylpyridine (from pyridine) (V,19) n-amyl-pyridines from picolines) (V,28) picolinic, nicotinic and isonicotinic acid (V,21-V,22) (ethyl nicotinate and p-cyanopyridine (V,23-V,24) uramil (V,25) 4-methyl-(coumarin (V,28) 2-hyi ox3depidine (V,29). 

Pyridines can be formed by mechanisms other than pyrolysis. The reaction of aldehydes with amino acids has been shown to generate pyridines (50). When a glycine-propanal mixture was heated to 180°C, 3,5-dimethyl-2-ethylpyridine, 3,5-di-methyl-4-ethylpyridine, and 3,5-dimethylpyridine formed. Glycine-propanal mixtnres, also heated to 180°C, gave 2,5-dimethylpyridine and 3,4-dimethylpyridine. This is an example of a nonpyrolytic method of forming pyridines. As small-chain aldehydes reqnired for this reaction are abundant in smoke, this is a feasible ronte to pyridines. 

The complex of 2,6-bis[l-(4-amino-l,2,3,6-tetrahydro-l,3-dimethyl-2,6-dioxop)uimidin-5-yl)imino]ethylpyridine with cadmium(II) of composition CdL2 (05JBI924) reveals antitumor activity. A great number of hetarylazomethine complexes show remarkable antibacterial activity... 

There are a wide range of polar stationary phases available for SFC. They include bare silica, cyano, amino, diol, ethylpyridine, and many others. Virtually all chiral stationary phase types have been used in SFC. 

Hofmaim degradations were carried out on 5pyridine carboxylic acids are treated with sodium azide in an oleum medium, a good yield (69%) of 3-aminopyridine and poorer yields (<30%) of 2- and 4-aminopyridine are realized. 3-Amino-5-nitropyridine is similarly prepared by the Schmidt reaction using 5-nitronicotinic and hydrazoic acid. ... 

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