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1.3- Dimethylpyrazinium iodide

Monomethiodides of pyrazine and methylpyrazines have been readily prepared (3, 32, 272, 565, 660). Rates and position of quatemization of 2-substituted pyrazines with methyl iodide in dimethyl sulfoxide at room temperature have been determined by a kinetic competition method (666) 2Hnethylpyrazine gave 13-dimethylpyrazinium iodide as the major product (704), with some 1,2-dimethylpyrazinium iodide (666). [Pg.81]

Methylpyrazine 1-oxide gave 1,3-dimethylpyrazinium iodide 4-oxide (351)... [Pg.132]

Amino-2,5-dimethylpyrazinium iodide 4-oxide 3-Amino-5,6-dimethyl-2(177)-pyrazinone... [Pg.361]

Methylpyrazine 1-oxide gave 1,3-dimethylpyrazinium iodide 4-oxide (351) (Mel, AcMe, or EtOH , sealed, 100°C, 4 h 95%) homologues were made likewise and similar treannent of pyrazine 1,4-dioxide gave a separable ( ) mixture of 1-methylpyrazinium iodide and its 4-oxide in approximately equal amounts. ... [Pg.132]

This effect is also shown in the proton spectra of 1-methyl-pyrazinium iodide (9), 2,4-dimethylpyrazinium (lOA), 2 amino-4-methylpyra-zinium iodide (lOB) and 1-methylquinoxalinium iodide (11) in deuterium oxide solution at 100 Me./sec.The reduction of the... [Pg.139]

See other pages where 1.3- Dimethylpyrazinium iodide is mentioned: [Pg.131]    [Pg.211]    [Pg.131]    [Pg.361]   
See also in sourсe #XX -- [ Pg.81 ]



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