3-硝基苯甲醚置于oxone,氯化铵体系中,用 乙腈 用作溶剂,化学反应 48.0H,以31%的收率获得4-氯-3-硝基苯甲醚 参考文献:Narender; Mohan,K.V.V. Krishna; Srinivasu,Indian Journal Of Chemistry-Section B Organic And Medicinal Chemistry,2004,Vol. 43,# 6,P. 1335-1338 标题:Narender; Mohan,K.V.V. Krishna; Srinivasu,Indian Journal Of Chemistry-Section B Organic And Medicinal Chemistry,2004,Vol. 43,# 6,P. 1335-1338
专利信息
专利号:US-8188282-B2 优先权日:2006-07-15 标 题:Regioselective palladium catalyzed synthesis of benzimidazoles and azabenzimidazoles 发明人:ALONSO JORGE; LINDENSCHMIDT ANDREAS; NAZARE MARC; HALLAND NIS; RKYEK OMAR; URMANN MATTHIAS 权利人:ALONSO JORGE; LINDENSCHMIDT ANDREAS; NAZARE MARC; HALLAND NIS; RKYEK OMAR; URMANN MATTHIAS; SANOFI AVENTIS 摘要:The present invention relates to a process for the regioselective synthesis of compounds of the formula I, n nwherein R0; R1; R2; R3; R4; R5; A1; A2; A3; A4, Q and J have the meanings indicated in the claims. The present invention provides a direct palladium catalyzed, regioselective process to a wide variety of unsymmetrical, multifunctional N-substituted benzimidazoles or azabenzimidazoles of formula I starting from 2-halo-nitroarenes and N-substituted amides useful for the production of pharmaceuticals, diagnostic agents, liquid crystals, polymers, herbicides, fungicidals, nematicidals, parasiticides, insecticides, acaricides and arthropodicides.
专利号:AU-2007276514-A1 优先权日:2006-07-15 标题:A regioselective palladium catalyzed synthesis of benzimidazoles and azabenzimidazoles
专利号:CA-2657717-A1 优先权日:2006-07-15 标 题 :A regioselective palladium catalyzed synthesis of benzimidazoles and azabenzimidazoles
专利号:CN-101490014-B 优先权日:2006-07-15 标 题:Regioselective palladium-catalyzed synthesis of benzimidazoles and azabenzimidazoles
专利号:CN-109400507-A 优先权日:2018-10-09 标 题 :Synthesis of Impurities in Iilamod Intermediates
专利号:CN-101490014-A 优先权日:2006-07-15 标题:Regioselective palladium-catalyzed synthesis of benzimidazoles and azabenzimidazoles
[参考文献]: T Inaba, Et Al. Synthesis And Antiinflammatory Activity Of 7-Methanesulfonylamino-6-Phenoxychromones. Antiarthritic Effect Of The 3-Formylamino Compound (T-614) In Chronic Inflammatory Disease Models. Chem Pharm Bull (Tokyo). 2000 Jan;48(1):131-9.
合成参考文献
摘要:Klapars, A., Science of Synthesis: Cross Coupling and Heck-Type Reactions, (2012) 2, 228.