以4,4'-二氨基-二苯胺-2-磺酸代替苯胺,与1-羟基-7-氨基-3,6-二萘磺酸、间苯二胺、苯胺等合成无致癌作用的环保型黑色直接染料。探索了合成工艺及反应条件,并对其进行耐酸、耐碱等性能测试,用常规染色工艺对皮革进行染色应用。结果...以4,4'-二氨基-二苯胺-2-磺酸代替苯胺,与1-羟基-7-氨基-3,6-二萘磺酸、间苯二胺、苯胺等合成无致癌作用的环保型黑色直接染料。探索了合成工艺及反应条件,并对其进行耐酸、耐碱等性能测试,用常规染色工艺对皮革进行染色应用。结果表明,染料的上染率较高,染料的耐皂洗牢度和耐日晒牢度与直接黑L-3BG相当。产品中未含有22种致癌芳香胺,染料本身也无致癌作用,在碱性条件下不会分解出致癌芳香胺,是符合ECO-Tex Standard 100要求的新型染料。展开更多
3,4-Dihydropyrimidin-2-(1H)-ones were synthesized in high yields by a one-pot cyclocondensation of aldehyde,1,3-dicarbonyl compound,and urea or thiourea using copper o-toluenesulfonate as a catalyst under solvent-free...3,4-Dihydropyrimidin-2-(1H)-ones were synthesized in high yields by a one-pot cyclocondensation of aldehyde,1,3-dicarbonyl compound,and urea or thiourea using copper o-toluenesulfonate as a catalyst under solvent-free conditions at 90℃.Effects of molar ratio of reactants,amount of catalyst,and reaction temperature on the yields of 3,4-dihydropyrimidin-2-(1H)-ones were investigated.The results showed that at the condition of naldehyde∶n1,3-dicarbonyl compounds∶nurea(or thiourea)=1∶1.2∶1.5,1 mol% catalyst(molar percent of aldehyde),2.0 h at 90℃,the yields of products were 51-96%.After reaction,the catalyst could be reused for four times without distinct loss of catalytic activity.展开更多
文摘以4,4'-二氨基-二苯胺-2-磺酸代替苯胺,与1-羟基-7-氨基-3,6-二萘磺酸、间苯二胺、苯胺等合成无致癌作用的环保型黑色直接染料。探索了合成工艺及反应条件,并对其进行耐酸、耐碱等性能测试,用常规染色工艺对皮革进行染色应用。结果表明,染料的上染率较高,染料的耐皂洗牢度和耐日晒牢度与直接黑L-3BG相当。产品中未含有22种致癌芳香胺,染料本身也无致癌作用,在碱性条件下不会分解出致癌芳香胺,是符合ECO-Tex Standard 100要求的新型染料。
文摘3,4-Dihydropyrimidin-2-(1H)-ones were synthesized in high yields by a one-pot cyclocondensation of aldehyde,1,3-dicarbonyl compound,and urea or thiourea using copper o-toluenesulfonate as a catalyst under solvent-free conditions at 90℃.Effects of molar ratio of reactants,amount of catalyst,and reaction temperature on the yields of 3,4-dihydropyrimidin-2-(1H)-ones were investigated.The results showed that at the condition of naldehyde∶n1,3-dicarbonyl compounds∶nurea(or thiourea)=1∶1.2∶1.5,1 mol% catalyst(molar percent of aldehyde),2.0 h at 90℃,the yields of products were 51-96%.After reaction,the catalyst could be reused for four times without distinct loss of catalytic activity.
