May-Jun 1999 Studies on Pyrazines. 35 [1]. An Improved Synthesis of Bromopyrazines from Hydroxypyrazines Nobuhiro Sato* and Nobuhiko Narita 783 Department of Chemistry, Yokohama City University, Yokohama 236-0027, Japan Received Januarty 4, 1999 The synthesis of bromopyrazines from hydroxypyrazines was successfully effected by the procedure via trimethylsilyloxypyrazines, the sequence of which proceeds under mild conditions and ...