HPLC of Formula: 210169-54-3In 2016 ,《Asymmetric Synthesis of Protected Cyclohexenylamines and Cyclohexenols by Rhodium-Catalyzed [2+2+2] Cycloaddition》 appeared in Angewandte Chemie, International Edition. The author of the article were Masutomi, Koji; Sugiyama, Haruki; Uekusa, Hidehiro; Shibata, Yu; Tanaka, Ken. The article conveys some information:
Cationic rhodium(I)/axially chiral biaryl bis(phosphine) complexes catalyze the asym. [2+2+2] cycloaddition of 1,6-enynes with electron-rich functionalized alkenes, enamides, and vinyl carboxylates, to produce the corresponding protected cyclohexenylamines and cyclohexenols. Regioselectivity depends on structures of substrates. The present cycloaddition was successfully applied to the enantioselective total synthesis of (-)-porosadienone by using the amide moiety as a leaving group. After reading the article, we found that the author used (S)-5,5′-Bis(diphenylphosphino)-4,4′-bi-1,3-benzodioxole(cas: 210169-54-3HPLC of Formula: 210169-54-3)
(S)-5,5′-Bis(diphenylphosphino)-4,4′-bi-1,3-benzodioxole(cas: 210169-54-3) is a chelating ligand used to prepare coordination complex catalysts, such as its use in Pd catalysts for the enantioselective synthesis of spiro- or benzofused hetereocycles with exocyclic olefins via enantioselective intramolecular dearomative Heck reaction of indoles, benzofurans, pyrroles and furans.HPLC of Formula: 210169-54-3
Referemce:
Phosphine ligand,
Chiral phosphines in nucleophilic organocatalysis