申请人:Thiokol Corporation
公开号:US05428165A1
公开(公告)日:1995-06-27
A process for preparing salts of 5-nitrobarbituric acid involves allowing an in situ generated a compound represented by formula (I): ##STR1## wherein R.sub.1 and R.sub.2 are the same or different and are, H, C.sub.1 to C.sub.8 alkyl or substituted C.sub.1 to C.sub.8 alkyl, aryl or substituted aryl, to condense with urea to obtain a condensation product; and neutralizing the condensation product with at least one organic base and another cation source (MX) at a pH.gtoreq.7 and recovering the thus formed salt of 5-nitrobarbituric acid.
制备5-硝基巴比妥酸盐的过程包括允许在原位生成的化合物(I)与脲缩合,其中化合物(I)的公式表示为:##STR1## 其中R.sub.1和R.sub.2相同或不同,可以是氢、C.sub.1至C.sub.8烷基或取代的C.sub.1至C.sub.8烷基、芳基或取代的芳基;然后在pH≥7的条件下,用至少一种有机碱和另一种阳离子源(MX)中和缩合产物,并回收所形成的5-硝基巴比妥酸盐。