CAS: 1533-45-5; 1,2-Bis(4-(Benzo[d]Oxazol-2-yl)Phenyl)Ethene

相似化合物

2397-00-4 59049-84-2 833-50-1

上下游产品

2-(4-bromomethylphenyl)benzoxazole Stilbene-4,4'-dicarboxylic acid 4,4'-stilbenedicarbonyl dichloride

2-[4-(溴甲基)苯基]-1,3-苯并恶唑置于potassium Tert-Butylate体系中,用 二甲基亚砜 用作溶剂,化学反应 1.0H,以92%的收率获得荧光增白剂 Ob-1
参考文献:Synthesis And Spectral-Luminescence Properties Of 4,4-Di(2-Oxazolyl)-Stilbenes And 4,4-Di(2-Oxazolyl)Tolans
标题:Synthesis And Spectral-Luminescence Properties Of 4,4-Di(2-Oxazolyl)-Stilbenes And 4,4-Di(2-Oxazolyl)Tolans
摘要:
Doi:10.1007/bf00503327

专利信息

专利号:US-2025034123-A1
优先权日:2021-12-28
标题 :A synthesis method of benzoxazole based optical brighteners
发明人：BASALP MEHMET; GUREL GOKAY
权利人:AKDENIZ CHEMSON KIMYA SANAYI VE TICARET ANONIM SIRKETI
摘要:The present invention is a synthesis method for benzoxazole based optical brighteners characterized by comprising the steps of; placing in a reactor vessel at least one acid selected from thiophene-2,5-dicarboxylic acid or stilbene-4,4′-dicarboxylic acid, at least one catalyst and at least one compound selected from liquid paraffin and/or xylene; obtaining a mixture by adding 2-amino-4-tert-butylphenol in the reactor vessel if the said at least one acid is selected as thiophene-2,5-dicarboxylic acid or adding 2-aminophenol in the reactor vessel if the said at least one acid is selected as stilbene-4,4′-dicarboxylic acid; mixing the obtained mixture for a first time period under nitrogen atmosphere to carry out the synthesis reaction of benzoxazole based optical brighteners; during mixing the obtained mixture, increasing the temperature of the said mixture gradually to a first temperature; after mixing obtained mixture for the first time period, filtering the mixture; after filtering the mixture, obtaining a first benzoxazole based optical brightener or a second benzoxazole based optical brightener.

专利号:WO-2023128885-A1
优先权日:2021-12-28
标 题 :A synthesis method of benzoxazole based optical brighteners

专利号:EP-4457291-A1
优先权日:2021-12-28
标 题 :A synthesis method of benzoxazole based optical brighteners