Expanding Pd-catalyzed C-N bond-forming processes: the first amidation of aryl sulfonates, aqueous amination, and complementarity with Cu-catalyzed reactions.
The first general method for the Pd-catalyzed amination of aryl tosylates and benzenesulfonates was developed utilizing ligand 1, which belongs to a new generation of biaryl monophosphine ligands. In addition, the new catalyst system for the first time enables amidation of aryl arenesulfonates and aqueous amination protocols that do not necessitate the use of cosolvents. The substrate scope has been significantly expanded to include aryl halides containing primary amides and free carboxylic acid groups. In the case of multifunctional substrates, the Pd-catalyzed amination can provide selectivity that is complementary to the Cu-catalyzed C-N bond-forming processes.
Huang
Xiaohua
X
Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
Anderson
Kevin W
KW
Zim
Danilo
D
Jiang
Lei
L
Klapars
Artis
A
Buchwald
Stephen L
SL
D000577:Amides / Q000138:chemical synthesis*; D000586:Amination; D000588:Amines / Q000138:chemical synthesis*; D001190:Arylsulfonates / Q000737:chemistry*; D001555:Benzene Derivatives / Q000138:chemical synthesis / Q000737:chemistry; D002384:Catalysis; D003300:Copper / Q000737:chemistry*
D000577:Amides; D000588:Amines; D001190:Arylsulfonates; D001555:Benzene Derivatives; D003300:Copper