The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: (R)-2,2′,6,6′-Tetramethoxy-4,4′-bis(diphenylphosphino)-3,3′-bipyridine, is researched, Molecular C38H34N2O4P2, CAS is 221012-82-4, about Rhodium-Catalyzed Asymmetric 1,4-Addition of Arylboronic Acids to Coumarins: Asymmetric Synthesis of (R)-Tolterodine, the main research direction is asym addition arylboronic acid coumarin rhodium catalyst; tolterodine asym synthesis rhodium catalyst addition arylboronic acid coumarin.Name: (R)-2,2′,6,6′-Tetramethoxy-4,4′-bis(diphenylphosphino)-3,3′-bipyridine.
Rhodium-catalyzed asym. 1,4-addition of arylboronic acids R1B(OH)2 (R1 = Ph, 4-MeC6H4, 3-MeC6H4, 4-ClC6H44, 4-MeOC6H4) to coumarins I (R = 6-Me, H, 6-MeO2C, 8-MeO) proceeded with high enantioselectivity in the presence of a rhodium catalyst (3 mol %) generated from Rh(acac)(C2H4)2 and (R)-Segphos to give the corresponding (R)-4-arylchroman-2-ones II in over 99% ee. This asym. reaction was applied to the synthesis of (R)-tolterodine.
In addition to the literature in the link below, there is a lot of literature about this compound((R)-2,2′,6,6′-Tetramethoxy-4,4′-bis(diphenylphosphino)-3,3′-bipyridine)Name: (R)-2,2′,6,6′-Tetramethoxy-4,4′-bis(diphenylphosphino)-3,3′-bipyridine, illustrating the importance and wide applicability of this compound(221012-82-4).
Reference:
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider