Base-mediated intramolecular one-pot double-cyclization of epoxide-tethered 2-fluorobenzenesulfonamides: an avenue to 1,4-benzoxazine-fused benzothiaoxazepine-1,1-dioxides
Compounds having the formula
are useful for inhibiting protein kinases. Also disclosed are methods of making the compounds, compositions containing the compounds, and methods of treatment using the compounds.
Synthesis of 1-(2,3-dihydrobenzofuran-3-yl)-methanesulfonohydrazides through insertion of sulfur dioxide
作者:Yuanyuan An、Danqing Zheng、Jie Wu
DOI:10.1039/c4cc05401f
日期:——
A three-component reaction of 2-(allyloxy)anilines, sulfur dioxide and hydrazines under mild conditions is developed, which gives rise to 1-(2,3-dihydrobenzofuran-3-yl)-methanesulfonohydrazides in good yields. This radical process involves an intramolecular 5-exo-cyclization and insertion of sulfur dioxide.
Intramolecular Radical Carboaminoxylation of Aryl Amines
作者:Armido Studer、Marcel Hartmann、Carolin Gerleve
DOI:10.1055/s-0035-1560770
日期:——
Cyclizingradicalcarboaminoxylation of various arylamines is presented. The aryl diazonium salts in situ generated from the corresponding arylamines are reduced by tetra-n-butylammonium iodide (TBAI) to give the corresponding arylradicals. These arylradicals undergo 5-exo and 6-exo cyclization. Subsequent trapping with TEMPO or various other nitroxides provides the corresponding cyclized carboaminoxylated
介绍了各种芳胺的环化自由基羧基氧基化。由相应的芳胺原位生成的芳基重氮盐被四正丁基碘化铵 (TBAI) 还原,得到相应的芳基。这些芳基经历 5-exo 和 6-exo 环化。随后用 TEMPO 或各种其他氮氧化物捕集以中等至非常好的产率提供相应的环化羧基氨基氧化产物。
Radical Carbonylation Mediated by Continuous-Flow Visible-Light Photocatalysis: Access to 2,3-Dihydrobenzofurans
作者:Nenad Micic、Anastasios Polyzos
DOI:10.1021/acs.orglett.8b01971
日期:2018.8.3
The annulative carbonylation of alkenyl-tethered arenediazonium salts using visible-light photocatalysis in continuous flow is described. The method furnishes a diverse series of novel acetate-functionalized 2,3-dihydrobenzofurans at room temperature and moderate CO pressure (25 atm), delivering these products in a short time with straightforward scale-up. This continuous flow and free-radical approach
Cyclizing Radical Carboiodination, Carbotelluration, and Carboaminoxylation of Aryl Amines
作者:Marcel Hartmann、Armido Studer
DOI:10.1002/anie.201403968
日期:2014.7.28
Radicalcarboiodination of various arylamines is reported. Aryl diazonium salts, generated in situ from the corresponding arylamines, are reacted with Bu4NI to provide the corresponding arylradicals which undergo 5‐exo or 6‐exo cyclization. Iodine abstraction eventually affords the carboiodinated products in good to excellent yields. If TEMPO is added, the cascade provides the cyclized carboaminoxylation