nitronium

1.Pyridine can react with halogens,nitronium fluoroborate, sulfur trioxide, boranes and chromium trioxide to form some useful organic reagents which are introduced briefly in the paper.

吡啶可以和卤素、硝基四氟化盐、三氧化、及三氧化铬反应，形成一些有用有机试剂。