CAS: 121219-07-6; 2,3-Difluoroethoxybenzene

上下游产品

2,3-二氟苯酚 2,3-Difluoro-Phenol 6418-38-8

6-Amino-2,3-Difluoro-1-Ethoxybenzene置于硫酸,Sodium Nitrite,铜体系中,用 乙醇 用作溶剂,化学反应 3.0H,以91%的收率获得2,3-二氟苯乙醚
参考文献:2,3-二氟苯乙醚的制备方法
标题:2,3-二氟苯乙醚的制备方法
摘要:本发明涉及一种2,3‑二氟苯乙醚的制备方法,包括下述步骤:(1)重氮反应:以6‑氨基‑2,3‑二氟苯乙醚为原料,在酸中成盐,再与亚硝酸钠进行重氮反应得到反应液;(2)脱氨:将反应液滴加至含有催化剂的乙醇中,过滤,静置分层,浓缩后得到2,3‑二氟苯乙醚粗品;(3)纯化:2,3‑二氟苯乙醚粗品经过减压蒸馏处理得到2,3‑二氟苯乙醚精制品.本发明工艺简单,产品后处理简便,环境污染小,制备得到的2,3‑二氟苯乙醚产品质量品质高;本发明在提高产品质量品质的同时减少环境污染,使产品生产清洁化,环保化,使产品更适合大批量生产.

专利信息

专利号:US-5087764-A
优先权日:1988-03-10
标 题 :Process for the preparation of 2,3-difluorobenzenes
发明人：REIFFENRATH VOLKER; KRAUSE JOACHIM
权利人:MERCK PATENT GMBH
摘要:1,4-disubstituted 2,3-difluorobenzenes according to formula I are suitable as intermediates for the synthesis of liquid crystalline compounds.

专利号:US-7294732-B2
优先权日:2002-08-07
标 题:Silicon compound
发明人：OHNO KOHJI; TSUJII YOSHINOBU; FUKUDA TAKESHI
权利人:CHISSO CORP
摘要:A silicon compound represented by Formula (1). In Formula (1), R 1 is a group independently selected respectively from the group consisting of a hydrogen atom, alkyl, substituted or non-substituted aryl and substituted or non-substituted arylalkyl, and A 1 is an organic group substituted with a halogenated sulfonyl group and is preferably a group represented by Formula (2). In Formula (2), X is halogen; R 2 is alkyl; a is an integer of 0 to 2; and Z 1 is a single bond or alkylene having a carbon number of 1 to 10. n n n n n n n n n n The silicon compound provided by the present invention is a silsesquioxane derivative having an excellent living polymerizable radical polymerization initiating function. For example, it is possible to commence polymerization by allowing an acryl base monomer to coexist to form an acryl base polymer making use of one point of the structure of the silsesquioxane in the present invention as a starting point. Because a halogenated sulfonyl group has a strong electrophilicity, it is possible to synthesize various silsesquioxane derivatives by reacting the silicon compound provided by the present invention with various nucleophilic reagents, and it can actively be used as an intermediate useful for organic synthesis.

专利号:CN-110922306-B
优先权日:2019-12-17
标 题:A kind of synthesis technology of 2,3-difluoro-4-alkoxyphenol

专利号:CN-117402041-A
优先权日:2023-10-16
标题 :Synthesis method of 4-ethoxy-2, 3-difluorophenol

专利号:CN-120717876-A
优先权日:2025-06-17
标题:Synthesis and application of a liquid crystal compound containing alkoxydicyclohexylpolyfluorobenzene

专利号:CN-116332735-A
优先权日:2023-03-29
标 题:Synthesis method of substituted dicyclohexyl ethylene fluorobenzene compound