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J3-Picoline

Jacobs and Craig have made an extended study of the selenium dehydrogenation products of cevine and in addition to cevanthrol and eevanthridine have obtained the following thirteen substances Bases, j3-picoline, 5-methyl-2-ethylpyridinc, 5-methyl-2-hydroxyethylpyridine, base, CgHgON (pierate, m.p. 151-2°), base, CgHjgN (pierate, m.p. 150-1°), base, CggHigN, m.p. 233-5° (methiodide, m.p. 285-290°), base, m.p. 229-230° (methiodide, m.p. 295° (dec.) )... [Pg.703]

The j3-picoline in the base recovered from the residual picoline - ZnG, complexes is separated from the y-picoline by fractional freezing pure j8-piooline has m.p.—18-2° and y-picoline has m.p. -f 3-6 . [Pg.179]

The transesterification of N-(j3-hydroxyethyl)ethylenediamine by p-nitro-phenyl picolinate has been shown to be subject to zinc ion catalysis by Sigman and Jorgensen 27). Their investigations indicate that reaction very probably occurs through the formation of a ternary complex in which zinc ion functions both to lower the pKa of the hydroxyethyl moiety, and to serve as a template for the reaction. The high specificity manifest in this catalytic process is emphasized by the fact that no catalysis of acyl-group transfer occurs when N-((8-hydroxy-ethyl) ethylenediamine is replaced by ethylenediamine, 1,5-diaminopentane, di-ethylenetriamineor aminoethanol. Furthermore, the reactions of the p-nitrophenyl esters of isonicotinic and acetic acids with N-((8-hydroxyethyl) ethylenediamine are not subject to zinc ion catalysis. [Pg.72]

D is a volatile base, CgH N, b.p. 134-8°, DJF 0-9595, nj, ° 1-4968, giving a picrate, m.p. 154-6°, and a mercurichloride, m.p. 151-2° it is isomeric with the picolines and resembles j8-picoline, but does not oxidise to nicotinic acid or reduce to j3-pipecoline and so cannot be j8-picoline j it may contain some a-picoline. A base similar to D has been isolated from tell fescue grass. ... [Pg.798]

C7H4O2N2 Pyridine-3,4-dicarboximide NaOBr j3-Amino-7-picolinic acid ... [Pg.291]

C7H608N2 2-Carboxypyridine-3-carboxamide NaOBr j3-Amino-a-picolinic acid — 92... [Pg.291]

See other pages where J3-Picoline is mentioned: [Pg.489]    [Pg.1013]    [Pg.161]    [Pg.1013]    [Pg.52]    [Pg.185]    [Pg.185]    [Pg.489]    [Pg.1013]    [Pg.161]    [Pg.1013]    [Pg.52]    [Pg.185]    [Pg.185]    [Pg.121]    [Pg.430]    [Pg.174]    [Pg.178]    [Pg.2918]    [Pg.837]    [Pg.226]    [Pg.213]   
See also in sourсe #XX -- [ Pg.313 ]



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