851331-08-3Relevant articles and documents
Palladium-catalyzed domino double n-arylations (inter- and intramolecular) of 1,2-diamino(hetero)arenes with o,o-dihalo(hetero)arenes for the synthesis of phenazines and pyridoquinoxalines
Laha, Joydev K.,Tummalapalli, K.S. Satyanarayana,Gupta, Ankur
, p. 8330 - 8335 (2014/01/06)
Domino reactions for the synthesis of phenazines have been developed that start from 1,2-diaminoarenes and 1,2-dihaloarenes and proceed through palladium-catalyzed double N-arylations (inter- and intramolecular) followed by an in situ oxidation. A variety of functional groups, which include base-sensitive groups, were well tolerated under the optimized reaction conditions to afford phenazines in good to excellent yields. The protocol was extended to the synthesis of pyridoquinoxalines by employing either o-phenylenediamines and 2,3-dihalopyridines or 1,2-diaminopyridines and 1,2-dihaloarenes. Domino reactions for the synthesis of phenazines have been developed that start from 1,2-diaminoarenes and 1,2-dihaloarenes and proceed through palladium-catalyzed double N-arylations (inter- and intramolecular) followed by an in situ oxidation. The protocol was extended to the synthesis of pyridoquinoxalines. Copyright
