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、四氟化硼盐、三氧化硫、硼烷及三氧化铬反应，形一些有用有机试剂。