SEARCH Articles Figures Tables 2- Chloro-3- pyrazine 2- Chloro-3- pyrazine 2- Chloro-6-hydroxy pyrazine 2- Chloro-6-hydroxy pyrazine chlorination 2-Amino-5-chloro-3- pyrazine 2-Amino-5-chloro-3-methoxycarbonyl-6 pyrazine 2-Chloro-3- pyrazine aminolysis 2-Chloro-3- pyrazine cyclization 2-Chloro-5- pyrazine hydrolysis 2-Chloro-6-methoxy pyrazine 2.6- Diamino-3-chloro-5- pyrazine Methyl 3-bromo-6-chloro-5- pyrazine Pyrazine 2-chloro-, nucleophilic substitution Pyrazine, chloro-, lithiation Pyrazines 2-chloro-, nucleophilic substitution