Imidazo[1,2-a]pyrazine, bromo and methoxy derivatives: a 13C N.M.R. determination applied to nucleophilic substitution studies

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Abstract
The 13C chemical shifts and coupling constants of imidazo[1,2-a]pyrazine and some of its derivatives are reported and compared with those of other series. These data enable us to study the nucleophilic substitution of 3,5-dibromoimidazo[1,2-alpyrazine and 6,8-dibromoimidazo[1,2-a]pyrazine by a methoxy group.

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