Pyrazinecarbaldehydes reduction

Note The reduction of C-acyl- to C-alkylpyrazines has been used occasionally 1022,1567 in addition, pyrazinecarbaldehydes react with methylene reagents to afford alkenylpyrazines, providing one or other reactant is preconverted into a Wittig reagent, as here illustrated. 

Reactions of pyrazinecarbaldehydes already discussed include reduction to hydroxyalkylpyrazines (Section 5.2.1) and oxidation to pyrazinecarboxylic acids (Section 8.1.1) no Cannizzaro disproportionations appear to have been reported recently. 

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