Diacetato{(S)-(+)-5,5'-bis[di(3,5-di-t-butyl-4-methoxyphenyl)phosphino]-4,4'-bi-1,3-benzodioxole}ruthenium(II) Ru(OAc)2[(S)-dtbm-segphos?]

Technical Notes:
1. Biaryl bisphosphine ligand with narrow dihedral angle. The DM-S EGPHOS ligand, as the ruthenium complex, gives superior
ena ntioselectivity and dias te re oselectivity in the asymmetric hydrogenation of a-subs tituted- ß-ke toesters. See 1 5-0066
2.Ruthenium catalyzed enantioselective synthesis of ß amino acids by hyd rogenation
3.Ruthenium catalyzed asymmetric hydrogenation of 3 quinuclidinone. See 44-0098 for Ru catalyst.
References:
1. WIPO Pat. WO20050284 19.
2. u.S. Pat. App.2006047122.