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1-methyl-4-nitrosobenzene 2,4,6-tribromoresorcinol 3-bromo-2,4-dihydroxybenzoic acid recorcinol 2-Bromo-1,3-bis-(6-bromo-hexyloxy)-benzene 2-Bromo-1,3-bis-(8-bromo-°Ctyloxy)-benzene 2-Bromo-1,3-bis-(12-bromo-dodecyloxy)-benzene 3,7.19,13.115,19]°Ctacosa-1(25)3,5,7(28),9,11,13(27),15,17,19(26),21,23-dodecaene-4,6,10,12,16,18,22,24-°Ctol5,11,17,23-tetrabromo-2,8,14,20-tetrakis(2-phenylethyl)methylpentacyclo[19.3.1.13,7.19,13.115,19]°Ctacosa-1(25)3,5,7(28),9,11,13(27),15,17,19(26),21,23-dodecaene-4,6,10,12,16,18,22,24-°Ctol 间苯二酚置于溴,Sodium Hydroxide,Sodium Sulfite体系中,用 氯仿,甲醇,水 作为反应溶剂,化学反应 19.0H,以93%的收率获得产物2-溴邻苯二酚
参考文献:利用氢键促进的 Diels-Alder 反应对 (+)-雌酮进行对映选择性合成
标题:利用氢键促进的 Diels-Alder 反应对 (+)-雌酮进行对映选择性合成
摘要:从 Dane 的二烯和甲基环戊烯二酮开始,沿 Quinkert-Dane 路线合成 (+)-雌酮,总产率为 24%.关键步骤是由脒催化剂与传统的 Ti-Taddolate Lewis 酸一样有效地促进对映选择性 Diels-Alder 反应.
DOI:10.1021/jo100053J
海关参考信息
- 2907221000-对苯二酚
2908199090-其他酚的卤化衍生物
2908999090-其他酚的硝化衍生物
2918290000-其他含酚基羧酸 - 💡 提示:海关信息按照顺序优先匹配,如需确认的海关信息,请参考相关资料。
- 详情请参考:📖 海关编码查询和海关进出口税则
专利信息
专利号:US-9981887-B1
优先权日:2017-01-10
标题 :Synthesis of phenylethynylbenzenes
发明人:LASKOSKI MATTHEW; KELLER TEDDY M
权利人:US NAVY
摘要:A method of: reacting a dihydroxybenzene with bromine to form a bromodihydroxybenzene; reacting the bromodihydroxybenzene with trifluoromethanesulfonyl chloride or trifluoromethanesulfonic anhydride to form a bromotrifluoromethanesulfonatobenzene; and reacting the bromotrifluoromethanesulfonatobenzene with phenylacetylene to form a phenylethynylbenzene.
专利号:US-5371291-A
优先权日:1993-10-15
标 题:Synthesis of 4,6-diaminoresorcinol
发明人:NADER BASSAM S
权利人:DOW CHEMICAL CO
摘要:The invention is a new process for preparing 4,6-diaminoresorcinol, a precursor to polybisbenzoxazoles. The desired product is prepared from resorcinol by incorporating a halo group on the 2-position of resorcinol to form 2-haloresorcinol, then nitrating selectively at the 4- and 6-positions of the 2-haloresorcinol to form 2-halo-4,6-dinitroresorcinol, then hydrogenating the 2-halo-4,6-dinitroresorcinol. The selective incorporation of a halo group on the 2-position of resorcinol is accomplished by sulfonating resorcinol at the 4- and 6-positions. The following scheme illustrates the synthetic route used to prepare 4,6-diaminoresorcinol from resorcinol: ##STR1##
专利号:US-2022056008-A1
优先权日:2018-12-21
标 题:Process and intermediates for the synthesis of voxelotor
发明人:FERREIRO GIL JUAN JOSÉ; IGLESIAS RETUERTO JESÚS MIGUEL; LORENTE BONDE-LARSEN ANTONIO
权利人:CRYSTAL PHARMA SAU
摘要:The invention relates to a process for the preparation of Voxelotor, or a salt or solvate thereof, according to the following scheme (Formula 1).
专利号:CN-115340447-A
优先权日:2022-09-19
标 题:One-pot Synthesis of Two Caged Macrocyclic Aromatics and Its Separation and Purification Method
专利号:CN-115340447-B
优先权日:2022-09-19
标题 :One-pot synthesis of two caged macrocyclic aromatic hydrocarbons and separation and purification method thereof