1443771-11-6Relevant articles and documents
Palladium-catalyzed picolinamide-directed iodination of remote ortho-C-H bonds of arenes: Synthesis of tetrahydroquinolines
Nack, William A.,Wang, Xinmou,Wang, Bo,He, Gang,Chen, Gong
supporting information, p. 1243 - 1249 (2016/08/02)
A new palladium-catalyzed picolinamide (PA)-directed ortho-iodination reaction of ?-C(sp2 )-H bonds of γ -arylpropylamine substrates is reported. This reaction proceeds selectively with a variety of γ-arylpropylamines bearing strongly electron-donating or withdrawing substituents, complementing our previously reported PA-directed electrophilic aromatic substitution approach to this transformation. As demonstrated herein, a three step sequence of Pd-catalyzed γ-C(sp3)-H arylation, Pd-catalyzed ? -C(sp2 )-H iodination, and Cu-catalyzed C-N cyclization enables a streamlined synthesis of tetrahydroquinolines bearing diverse substitution patterns.
Iodination of remote ortho-C-H bonds of arenes via directed S EAr: A streamlined synthesis of tetrahydroquinolines
Nack, William A.,He, Gang,Zhang, Shu-Yu,Lu, Chengxi,Chen, Gong
supporting information, p. 3440 - 3443 (2013/07/26)
A new strategy for the synthesis of tetrahydroquinolines (THQs) via the sequential functionalizations of remote C-H bonds is reported. This method uses a single picolinamide directing/protecting group to effect Pd-catalyzed γ-C(sp3)-H arylation, metal-free ε-C(sp2)-H iodination, and Cu-catalyzed intramolecular C-N cross-coupling. The overall sequence is efficient and versatile, and offers a streamlined synthesis of THQs with complex substitution patterns from readily available aryl iodide and aliphatic amine precursors.