3-allyloxy-2-(α-hydroxyiminoisocaproylamino)propionitrile 在
ethyl acetate n-hexane 、
乙醚 、
苯 作用下,
以
溶剂黄146 为溶剂,
反应 1.0h,
以to obtain 5 g of 6-allyloxymethyl-5-amino-3-isobutyl-1,2-dihydropyrazin-2-one 4-oxide (Compound B-3) as pale yellow plate-like crystals的产率得到6-allyloxymethyl-5-amino-3-isobutyl-1,2-dihydropyrazin-2-one 4-oxide