Iridium(<scp>iii</scp>)-catalyzed regioselective direct arylation of sp<sup>2</sup> C–H bonds with diaryliodonium salts
作者:Pan Gao、Li Liu、Zhuangzhi Shi、Yu Yuan
DOI:10.1039/c6ob01145d
日期:——
A regioselectivedirectarylation of arenes and olefins at the ortho position is reported. The key to the high selectivity is the appropriate choice of diaryliodonium salts as the arylating reagent in the presence of a cationic iridium(III) catalyst. The coordination of the metal with an oxygen atom or a nitrogen atom and subsequent C–H activation allows for directarylation with coupling partners
A new method of ortho-fluorination where an aryl C—H bond is directly replaced by an aryl C-F bond in a palladium-catalyzed reaction is provided. The method includes the ortho-fluorination of a triflamide protected benzylamine, a palladium catalyst, such as Pd(OTf)
2
, a fluorinating reagent such as N-fluoro-2,4,6-trimethylpyridinium triflate, and a ligand to promote the reaction such as N-methylpyrrolidinone (NMP).
Palladium-Catalyzed Oxidative Acylation of<i>N</i>-Benzyltriflamides with Aldehydes<i>via</i>CH Bond Activation
作者:Satyasheel Sharma、Jihye Park、Eonjeong Park、Aejin Kim、Minyoung Kim、Jong Hwan Kwak、Young Hoon Jung、In Su Kim
DOI:10.1002/adsc.201200889
日期:2013.1.29
A palladium-catalyzed ortho-acylation of N-benzyltriflamides with aldehydes via direct sp2 CH bondactivation is described. Benzylamines with a triflamide directing group in the presence of palladium acetate, acetic acid, and tert-butyl hydroperoxide as an oxidant can be effectively coupled with aryl and alkyl aldehydes to provide ortho-acyl-N-benzyltriflamides with a high regioselectivity.
Direct acylation of N-benzyltriflamides from the alcohol oxidation level via palladium-catalyzed C–H bond activation
作者:Jihye Park、Aejin Kim、Satyasheel Sharma、Minyoung Kim、Eonjeong Park、Yukyoung Jeon、Youngil Lee、Jong Hwan Kwak、Young Hoon Jung、In Su Kim
DOI:10.1039/c3ob40140e
日期:——
A palladium-catalyzed ortho-acylation of N-benzyltriflamides from the alcohol oxidation level via C–H bondactivation is described. These transformations have been applied to a wide range of substrates, and typically proceed with excellent levels of chemoselectivity and with high functional group tolerance.
Direct access to isoindolines through tandem Rh(<scp>iii</scp>)-catalyzed alkenylation and cyclization of N-benzyltriflamides
作者:Neeraj Kumar Mishra、Jihye Park、Satyasheel Sharma、Sangil Han、Mirim Kim、Youngmi Shin、Jinbong Jang、Jong Hwan Kwak、Young Hoon Jung、In Su Kim
DOI:10.1039/c3cc49486a
日期:——
The rhodium-catalyzed oxidative alkenylation of N-benzyltriflamides with olefins followed by an intramolecular cyclization via C–H bond activation is described.