节点文献
2,2-二(3,5-二氨基-4-羟基苯基)丙烷的合成
Synthesis of 2,2-Bis(3,5-diamino-4-hydroxyphenyl)propane
【摘要】 2,2-二(3,5-二氨基-4-羟基苯基)丙烷是一种新型膨胀型阻燃剂和合成N-P系膨胀型阻燃剂的中间体。研究了Fe-A l/C催化水合肼还原2,2-二(4-羟基-3,5-二硝基苯基)丙烷合成2,2-二(3,5-二氨基-4-羟基苯基)丙烷的反应条件。结果表明:对20 mmol的反应物,Fe-A l/C催化剂的用量为0.6 g,反应温度为75℃,反应时间为5 h,物料比n〔2,2-二(4-羟基-3,5-二硝基苯基)丙烷〕∶n(水合肼)=1∶12时,还原产率为93.75%,w〔2,2-二(3,5-二氨基-4-羟基苯基)丙烷〕=96.5%(HPLC),Fe-A l/C催化剂可以重复使用7次。产物经元素分析、红外光谱、核磁共振和质谱分析确证。
【Abstract】 2,2-Bis(3,5-diamindo-4-hydroxyphenyl)propane(Ⅰ) is a new kind of intumescent flame retardant and an intermediate for synthesizing NP intumescent flame retardants.Ⅰ was synthesized by reducing 2,2-bis(4-hydroxy-3,5-dinitrophenyl)propane(Ⅱ) with hydrazine hydrate(Ⅲ) in the presence of Fe-Al/C composite catalyst.Thus,for 20 mmol Ⅱ,with n(Ⅱ)∶n(Ⅲ)=1∶12 and 0.6 g catalyst,reacting at 75 ℃ for 5 h,Ⅰ is obtained in 93.75% yield and the purity is w(Ⅰ)=96.5%(HPLC).The Fe-Al/C composite catalyst can be reused seven times.Structure of the product is characterized by elementary analysis,IR,1HNMR,13CNMR and MS.
【Key words】 2,2-bis(3,5-diamino-4-hydroxyphenyl)propane; intumescent flame retardant; Fe-Al/C composite catalyst; hydrazine hydrate;
- 【文献出处】 精细化工 ,Fine Chemicals , 编辑部邮箱 ,2006年05期
- 【分类号】TQ314.248;TQ241
- 【被引频次】1
- 【下载频次】181