CAS: 100-31-2; 4,4-Stilbenedicarboxylic Acid

相似化合物

6292-62-2 74299-91-5 1025726-44-6

上下游产品

CAS号78-08-0 乙烯基三乙氧基硅烷 | CAS号586-76-5 对溴苯甲酸 | CAS号619-58-9 对碘苯甲酸 | CAS号1075-49-6 4-乙烯基苯甲酸 | CAS号5216-37-5 4,4''-DICYANOST... | CAS号99-94-5 对甲基苯甲酸 | CAS号66888-67-3 trans-stilbene-... | CAS号34541-73-6 二甲基-(E)-均二苯代乙烯-... | CAS号133005-88-6 4,4'-二苯乙烯二羧酸 | CAS号34541-73-6 二甲基-(E)-均二苯代乙烯-... | CAS号36422-63-6 (E)-1,2-双(4-(苯并...

4-乙烯基苯甲酸置于hoveyda-Grubbs Catalyst Second Generation,Sodium Chloride体系中,用 乙酸乙酯 用作溶剂,化学反应 5.0H,以73%的收率获得4,4-二苯乙烯二羧酸
参考文献:机械化学钌催化的烯烃复分解
标题:机械化学钌催化的烯烃复分解
摘要:我们描述了 Ru 催化的烯烃复分解的机械化学方法的发展,包括交叉复分解和闭环复分解.该方法使用市售催化剂以不使用或仅使用催化量的液体实现多克规模的固体或液体烯烃的高产率,快速,室温复分解.
Doi:10.1021/jacs.5B00151

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:US-5756634-A
优先权日:1995-09-01
标 题 :Liquid one component PU stoving enamels
发明人：BRAUNSTEIN RICHARD; SCHMITT FELIX; WOLF ELMAR
权利人:HUELS CHEMISCHE WERKE AG
摘要:A liquid one-component PU stoving enamel is provided along with its synthesis, where the stoving enamel contains a) a hydroxyl-containing polymer; b) a partially or totally blocked isophorone-based polyisocyanate containing uretdione groups; c) an organic bismuth compound catalyst, and d) an organic solvent or mixture of two or more organic solvents, wherein components a and b are present in a total (a+b) amount of from 40 to 70 parts by weight based on total composition weight, component c is present in an amount of from 0.5 to 5 parts by weight based on total composition weight; and component d is present in an amount of from 30 to 60 parts by weight based on total composition weight; and wherein a and b are each present in amounts sufficient to provide an OH/NCO equivalents ratio of from 0.8 to 1.2 NCO equivalents of component b per OH equivalent of component a.\\!

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