development of the Ir(III)-catalyzed direct C-H amidation of arenes and alkenes using acyl azides as the nitrogen source. This procedure utilizes an in situ generated cationic half-sandwich iridium complex as a catalyst. The reaction takes place under very mild conditions, and a broad range of sp(2) C-H bonds of chelate group-containing arenes and olefins are smoothly amidated with acyl azides without the intervention
Rhodium-Catalyzed Direct CH Amination of Benzamides with Aryl Azides: A Synthetic Route to Diarylamines
作者:Jaeyune Ryu、Kwangmin Shin、Sae Hume Park、Ji Young Kim、Sukbok Chang
DOI:10.1002/anie.201205723
日期:2012.9.24
No muss, no fuss: A rhodium‐catalyzed direct intermolecular CHamination of benzamides and ketoximes using arylazides as the amine source has been developed. The reaction exhibits a broad substrate scope with excellent functional‐group tolerance, requires no external oxidants, releases N2 as the only by‐product, and produces diarylamines in high yields.
Iridium-Catalyzed Direct Arene C–H Bond Amidation with Sulfonyl- and Aryl Azides
作者:Donggun Lee、Youngchan Kim、Sukbok Chang
DOI:10.1021/jo4019683
日期:2013.11.1
Iridium-catalyzed direct ortho C-H amidation of arenes has been shown to work well with sulfonyl- and aryl azides as the nitrogen source. The reaction proceeds efficiently with a broad range of substrates bearing conventional directing groups with excellent functional group compatibility under mild conditions. In addition, substrates forming not only 5- but also 6-membered iridacycle intermediates undergo the C-H amidation with high selectivity.