Maj, Anna M.; Suisse, Isabelle; Hardouin, Christophe; Agbossou-Niedercorn, Francine published the article 《Synthesis of new chiral 2-functionalized-1,2,3,4-tetrahydroquinoline derivatives via asymmetric hydrogenation of substituted quinolines》. Keywords: quinoline cyclooctadiene iridium chloride chiral bisphosphine ligand iodine hydrogenation; tetrahydroquinoline stereoselective preparation.They researched the compound: (R)-2,2′,6,6′-Tetramethoxy-4,4′-bis(diphenylphosphino)-3,3′-bipyridine( cas:221012-82-4 ).Application of 221012-82-4. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:221012-82-4) here.
The asym. hydrogenation of a series of quinolines substituted by a variety of functionalized groups linked to the C2 carbon atom is providing access to optically enriched 2-functionalized 1,2,3,4-tetrahydroquinolines in the presence of in situ generated catalysts from [Ir(cod)Cl]2, a bisphosphine, and iodine. The enantioselectivity levels were as high as 96% ee.
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Reference:
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider