Acylation of 3, 4-Diaminofurazan

An acylation method of 3,4-diaminofurazan was developed. Under the catalysts of p-Tolu- enesulfonic acid, 3-amino-4-formylaminofurazan, 3-amino-4-acetylaminofurazan, 3-amino-4-propio- nylaminofurazan, 3-amino-4-butylramino-furazan and 3-amino-4-benzoylaminofurazan were synthe- sized by acylation of 3,4-diaminofurazan with formic acid, acetic acid, propionic acid, butyric acid and benzoic acid respectively. Also, 3,4-diacetylaminofurazan and 3,4-dipropionylaminofurazan were synthesized by acylation of 3,4-diaminofurazan with acetic anhydride and propionic anhydride re- spectively. Compared with the traditional method which uses acyl halogen as reagent, our method reduced the reaction time and increased the yield and purify. The 3-amino-4-acylaminofurazan could be hydrolyzed to 3,4-diaminofurazan in ethanol with acid catalyst.     

二水合5,5'-联四唑-1,1'-二羟基的纯度分析方法

建立了二水合5,5'-联四唑-1,1'-二羟基(BTO)纯度的高效液相色谱分析条件:反相色谱柱(Sino Chrom ODS-BP,4.6 mm×200 mm,5μm),检测波长213 nm,二元流动相乙腈-水30/70(V/V),流速1.0 m L·min-1,柱温25℃。采用外标法对BTO标准溶液进行定量测定,BTO浓度(c)在0.12~0.60 mg·m L-1范围内与色谱峰峰高(h)呈良好的线性关系,线性方程为h=573.78c-1.18,线性相关系数为0.9998。该法的相对标准偏差为0.48%~1.00%,平均回收率为98.10%~100.64%,方法灵敏、准确,可用于BTO产品的纯度分析。