反应详情

2,3-Dichloropyrazine (2 mL, 13 mmol) was dissolved in 95% ethanol (4 mL) and to this was added, dropwise and with stiffing, hydrazine anhydrous (2 mL, 67 mmol). During the addition of the hydrazine the solution became warm and yellowish. Following cooling of this mixture in an ice bath, the resulting material was isolated by filtration, washed with cold aqueous 95% ethanol to riled 1-(3-chloropyrazin-2-yl)hydrazine (1.42 g, 73% yield) as white crystals. No further purification was done. MS m/z: 145.0 (M+1).

1. additionto this was added
2. temperaturebecame warm
3. temperatureFollowing cooling of this mixture in an ice bath
4. customthe resulting material was isolated by filtration