反应详情

2-Chloro-6-methoxypyrazine 4-oxide is treated with an excess of ammonium hydroxide in an autoclave at 150° C. for 14 hours. The reaction mixture is cooled and evaporated to dryness to give the crude product which may be used in the next step as is.

1. temperatureThe reaction mixture is cooled
2. customevaporated to dryness