📜3-溴苯磺酰氯置于三乙基硅烷,碳酸氢钠,Caesium Carbonate,三氟乙酸体系中,用 1,4-二氧六环,二氯甲烷 作为反应溶剂,化学反应 4.5H,反应生成 N-苄基-3-溴苯磺酰胺
参考文献:Methylprenyl And Prenyl Protection For Sulfonamides
标题:Methylprenyl And Prenyl Protection For Sulfonamides
摘要:2-Methylprenyl (Mepre) Is An Efficient Protection For Sulfonamides. The Acidic Cleavage Of This Group Leads To Volatile By-Products And The Product Can Be Obtained In High Purity Without Additional Purification. Mepre Group Is Resistant To Pd/c-Catalysed Hydrogenolysis At 1 Atm,Suzuki-Miyaura Reaction,Ni(0) Catalysis Conditions And Oxidising Reagents Such As Nis And Ddq. The Prenyl (Pre) Group Can Also Be Used To Protect Sulfonamides In Certain Cases; However,The Substrate Scope Is Limited Due To The Side Product Formation.
DOI:10.1055/s-0034-1379428