The Article related to amidophosphine phosphinite preparation reaction rhodium complex, asym hydrogenation catalyst rhodium amidophosphine phosphinite, mandelamide lactamide phosphino preparation reaction rhodium, crystal mol structure amidophosphine phosphinite rhodium and other aspects.Recommanded Product: 65645-88-7
On May 14, 1996, Roucoux, Alain; Thieffry, Laurent; Carpentier, Jean-Francois; Devocelle, Marc; Meliet, Catherine; Agbossou, Francine; Mortreux, Andre; Welch, Alan J. published an article.Recommanded Product: 65645-88-7 The title of the article was Amidophosphine-Phosphinites: Synthesis and Use in Rhodium-Based Asymmetric Hydrogenation of Activated Keto Compounds. Crystal Structure of Bis[(μ-chloro)((S)-2-((diphenylphosphino)oxy)-2-phenyl- N-(diphenylphosphino)-N-methylacetamide)rhodium(I)]. And the article contained the following:
Amidophosphine-phosphinite ligands (AMPP) derived from (S)-N-benzylmandelamide ((S)-R,R’-benzylmandelNOP (S)-1 (R = R’ = phenyl) and (S)-7 (R = Ph, R’ = cyclopentyl)), (S)-N-methylmandelamide ((S)-R,R’-methylmandelNOP (S)-2 (R = R’ = phenyl) and (S)-8 (R = Ph, R’ = cyclopentyl)), (S)-N-methyllactamide ((S)-R,R’-methyllactaNOP (S)-3 (R = R’ = phenyl) and (S)-9 (R = Ph, R’ = cyclopentyl)), and (S)-2-(hydroxymethyl)-2-pyrrolidinone ((S)-R,R’-oxoProNOP (S)-4-6 and (S)-10 (R, R’ = Ph, cyclohexyl, cyclopentyl)) have been prepared in high yields (60-94%) and reacted with rhodium precursors to prepare neutral “Rh{AMPP}” complexes of general formula [Rh{AMPP}X]2, where X = Cl, I, OCOCH3, OCOCF3, and OCOC3F7. The crystal structure of [Rh{(S)-Ph,Ph-methylmandelNOP}Cl]2 (12) has been determined The rhodium atom has a cis square-planar coordination, and the seven-membered chelate ring has a boat conformation with the nitrogen atom in the mean plane RhP2. Complexes have been used as catalyst precursors for the asym. hydrogenation of dihydro-4,4-dimethyl-2,3-furandione (27) and N-benzylbenzoylformamide (29) giving the corresponding optically active hydroxy compounds in high yields and low to high enantiomeric excesses (28-98.7% ee and 13-87% ee, resp.). Catalytic activities (turnover frequency at 50% conversion at room temperature up to 3300 h-1) as well as the enantioselectivities depended strongly on the nature of the substituents on phosphorus as well as on the nature of the non chiral ligands. Catalyst precursor [Rh{(S)-Cp,Cp-oxoProNOP}OCOCF3]2 afforded (R)-pantolactone in 98.7% ee. The experimental process involved the reaction of (S)-2-Hydroxy-N-methyl-2-phenylacetamide(cas: 65645-88-7).Recommanded Product: 65645-88-7
The Article related to amidophosphine phosphinite preparation reaction rhodium complex, asym hydrogenation catalyst rhodium amidophosphine phosphinite, mandelamide lactamide phosphino preparation reaction rhodium, crystal mol structure amidophosphine phosphinite rhodium and other aspects.Recommanded Product: 65645-88-7
Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics