Intermolecular Radical C(sp
<sup>3</sup>
)−H Amination under Iodine Catalysis
作者:Alexandra E. Bosnidou、Kilian Muñiz
DOI:10.1002/anie.201901673
日期:2019.5.27
The direct amination of aliphatic C−H bonds has remained one of the most tantalizing transformations in organic chemistry. Herein, we report on a unique catalyst system, which enables the elusive intermolecular C(sp3)−H amination. This practical synthetic strategy provides access to aminated building blocks and fosters innovative multiple C−Hamination within a new approach to aminated heterocycles
benzylamines has been achieved for the first time through transition-metal-catalyzed oxidative carbonylation, in which the new KR strategy offered a new approach to afford chiral isoindolinones (er up to 97 : 3) and the origin of chemoselectivity and stereoselectivity was confirmed by density functional theory (DFT) calculations.
An efficient protocol for a one-pot synthesis of mono-sulfonamides has been developed. It features utilization of excess of sulfonylating agent followed by base mediated recovery of the primary sulfonamide.
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).
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.