CAS: 19842-76-3; 2,3,5,6-Tetrafluorobenzaldehyde

上下游产品

CAS号5216-17-1 2,3,5,6-四氟苯腈 | CAS号598-54-9 乙酸亚铜 | CAS号67-56-1 甲醇 | CAS号617-86-7 三乙基硅烷 | CAS号653-37-2 五氟苯甲醛 | CAS号95-50-1 邻二氯苯 | CAS号327-54-8 1,2,4,5-四氟苯 | CAS号109-94-4 甲酸乙酯 | CAS号4084-38-2 2,3,5,6-四氟苯甲醇 | CAS号5216-17-1 2,3,5,6-四氟苯腈 | CAS号92339-07-6 2,3,5,6-四氟对苯二甲醇 | CAS号3217-47-8 2,3,5,6-四氟对二苯甲醛 | CAS号776-40-9 2,3,5,6-四氟对二溴苄

1,2,4,5-四氟苯置于aluminum (III) Chloride,Iron(III) Chloride,5% Pd-Caco3,氢气,硫脲体系中,用 四氯化碳 用作溶剂,化学反应 10.0H,反应生成2,3,5,6-四氟苯甲醛
参考文献:一种四氟苯菊酯中间体的合成方法
标题:一种四氟苯菊酯中间体的合成方法
摘要:本发明公开了一种四氟苯菊酯中间体的合成方法,属于化学合成技术领域,其特征在于,包括以下步骤:(1)以2,3,5,6‑四氟苯为原料,与四氯化碳反应得到2,3,5,6‑四氟三氯甲基苯;(2)在复合催化剂的作用下,2,3,5,6‑四氟三氯甲基苯通过催化水解,得到2,3,5,6‑四氟苯甲酰氯;(3)在催化剂的作用下,2,3,5,6‑四氟苯甲酰氯与氢气发生罗森蒙德还原反应,得到2,3,5,6‑四氟苯甲醛;(4)2,3,5,6‑四氟苯甲醛与氢气发生催化加氢反应,得到2,3,5,6‑四氟苯甲醇;本发明步骤简单,各步骤收率高,反应简单;且各步反应条件温和,具有成本低,收率高,反应条件易得的优势.

专利信息

专利号:WO-2009135600-A1
优先权日:2008-05-07
标题:Catalysts for the synthesis of polyurethanes
发明人：LINDNER STEFAN; BAHNMUELLER STEFAN; SCHMIDT AXEL; WEIKARD JAN; BUCHMEISER MICHAEL; BANTU BHASKER; FRIEDERICHS WOLFGANG; KRAUSE JENS; REITER STEPHAN
权利人:BAYER MATERIALSCIENCE AG; LINDNER STEFAN; BAHNMUELLER STEFAN; SCHMIDT AXEL; WEIKARD JAN; BUCHMEISER MICHAEL; BANTU BHASKER; FRIEDERICHS WOLFGANG; KRAUSE JENS; REITER STEPHAN
摘要:The invention relates to novel catalysts for the synthesis of polyurethanes, represented by general formula (I) or (II), or compounds obtained by reacting a metal salt of the metals magnesium, calcium, yttrium, lanthanum, titanium, zirconium, manganese, iron, cobalt, zinc, aluminium, tin, comprising an anion from the group fluoride, chloride, bromide, sulphonate, trifluoromethanesulphonate, methanesulphonate, benzolsulphonate, para-toluenesulphonate, carboxy-C1-C10-alkyl, carboxy-C3-C10-cycloalkyl, carboxy- C2-C10-alkenyl, C1-C10-alkoxy, acetylacetonate, trifluoroacetlyacetonate or hexafluoroacetylacetonate, with N-heterocyclic compounds of general structure I; or with N-heterocyclic compounds of general structure II; or with N-heterocyclic compounds of general structure III.

专利号:US-5574146-A
优先权日:1994-08-30
标题:Oligonucleotide synthesis with substituted aryl carboxylic acids as activators
发明人：REDDY M PARAMESWARA; FAROOQUI FIRDOUS
权利人:BECKMAN INSTRUMENTS INC
摘要:A process for synthesizing oligonucleotides by phosphoramidite chemistry wherein the improvement is the use of substituted aryl carboxylic acids as the activators. These activators produce in situ nucleotide intermediates in which the substituted arylcarbonyl group has displaced the amidite moiety.

专利号:RU-2164913-C2
优先权日:1995-05-22
标 题:ALKENYLCARBOXYLIC ACID GUANIDIDES, METHOD OF THEIR SYNTHESIS, METHOD OF INHIBITION OF CELLULAR Na+/H+-EXCHANGE AND PHARMACEUTICAL COMPOSITION

专利号:CN-115259996-B
优先权日:2022-08-29
标题 :A kind of synthesis method of 2,3,5,6-tetrafluorobenzyl alcohol