Copper-Catalyzed C-N Cross-Coupling of Substituted 2-Halobenzoates with Secondary Acyclic Amides
作者:Jun Wu、Zhi-Cai Shang、Man-Gang Wang、Hua Yu
DOI:10.1055/s-0033-1338800
日期:——
The copper-catalyzed C–N cross-coupling of poorly nucleophilic acyclic secondary amides with sterically hindered substituted 2-halobenzoates has been demonstrated with 1,4-dimethyl-3,4-dihydro-1H-benzo[e][1,4]diazepin-5(2H)-one (DMBDO) as ligands for the first time. The protocol is effective for the synthesis of hindered tertiary amides. We also found that the alkoxycarbonyl (CO2R) group has a strong
摘要 1,4-二甲基-3,4-二氢-1 H-苯并[ e ] [1,4]已证明亲核性较差的无环仲酰胺与空间位阻取代的2-卤代苯甲酸酯在铜催化下的C-N交叉偶联。] diazepin -5(2 H)-one(DMBDO)首次作为配体。该方案对受阻叔酰胺的合成有效。我们还发现,烷氧羰基(CO 2 R)基团对Goldberg型C–N偶联反应具有很强的原取代作用。 1,4-二甲基-3,4-二氢-1 H-苯并[ e ] [1,4]已证明亲核性较差的无环仲酰胺与空间位阻取代的2-卤代苯甲酸酯在铜催化下的C-N交叉偶联。] diazepin -5(2 H)-one(DMBDO)首次作为配体。该方案对受阻叔酰胺的合成有效。我们还发现,烷氧羰基(CO 2 R)基团对Goldberg型C–N偶联反应具有很强的原取代作用。