四川化工
四川化工
사천화공
SICHUAN CHEMICAL INDUSTRY
2011年
4期
18-20
,共3页
二氨基马来腈%乙二醛%2,3-二氰基吡嗪%吡嗪-2,3-二羧酸
二氨基馬來腈%乙二醛%2,3-二氰基吡嗪%吡嗪-2,3-二羧痠
이안기마래정%을이철%2,3-이청기필진%필진-2,3-이최산
diaminomaleonitrile%glyoxal%2%3-dicyanopyrazine%pyrazine 2%3-dicarboxylic acid
介绍了以二氨基马来腈和乙二醛为原料,经环化合成2,3-二氰基吡嗪,再经水解生成吡嗪-2,3-二羧酸的反应过程,全程反应条件温和,产品总收率高于65%。
介紹瞭以二氨基馬來腈和乙二醛為原料,經環化閤成2,3-二氰基吡嗪,再經水解生成吡嗪-2,3-二羧痠的反應過程,全程反應條件溫和,產品總收率高于65%。
개소료이이안기마래정화을이철위원료,경배화합성2,3-이청기필진,재경수해생성필진-2,3-이최산적반응과정,전정반응조건온화,산품총수솔고우65%。
The text is concerned with a process for the preparation of Pyrazine 2,3-dicarboxylic acid.First,the intermediate,namely 2,3-Dicyanopyrazine,has been prepared by the Diaminomaleonitrile and glyoxal as raw materials.Further,the intermediate is hydrolyzed by Hydrochloric acid to form pyrazine-2,3-dicarboxylic acid of the reaction process.the product total yield is higher than 65% of the total.
