Name: (S,S)-Jacobsen Ligand
Other name: (S,S)-Jacobsen's ligand; (S,S)-(+)-N,N'-Bis(3,5-di-tert-butylsalicylidene)-1,2-cyclohexanediamine; (1S,2S)-N,N′-bis-[3,5-di-tert-butylsalicylidene]-1,2-cyclohexanediamine; (1S,2S)-(+)-1,2-Cyclohexanediamino-N,N'-bis(3,5-di-t-butylsalicylidene)
Melting point: 203-206 °C(lit.)
Appearance: light-yellow powder
Purity: 99%min.; 98%ee
Package: 25g, 100g, 500g, 1Kg, bulk package
(S,S)-Jacobsen ligand CAS:135616-36-3 is a chiral Schiff base, made from (S,S)-1,2-diaminocyclohexane tartrate and 3,5-di-tert-butyl-2-hydroxybenzaldehyde. It is became very famous because its complex with manganese(II), as asymmetric catalyst used in Sharpless epoxidation with highly enantioselectivity.
(S,S)-Jacobsen Ligand is light-yellow powder with highly chemical and optical purity. (S,S)-Jacobsen Ligand is also named as (S,S)-Jacobsen's ligand, (S,S)-(+)-N,N'-Bis(3,5-di-tert-butylsalicylidene)-1,2-cyclohexanediamine, etc.
UCHEM has been supplying (S,S)-Jacobsen Ligand and its enantiomer, (R,R)-Jacobsen Ligand. And also supplying its precausors, (1S,2S)-(+)-1,2-Diaminocyclohexane CAS:21436-03-3 and (1R,2R)-(-)-1,2-Diaminocyclohexane CAS: 20439-47-8, respectively.