Name: (R,R)-Jacobsen Ligand
Other name: (R,R)-Jacobsen's ligand; (R,R)-(-)-N,N'-Bis(3,5-di-tert-butylsalicylidene)-1,2-cyclohexanediamine; (1R,2R)-N,N′-bis-[3,5-di-tert-butylsalicylidene]-1,2-cyclohexanediamine; (1R,2R)-(+)-1,2-Cyclohexanediamino-N,N'-bis(3,5-di-t-butylsalicylidene)
Melting point: 205-207 °C(lit.)
Appearance: light-yellow powder
Purity: 99%min.; 98%ee
Package: 25g, 100g, 500g, 1Kg, bulk package
(R,R)-Jacobsen ligand CAS:135616-40-9 is enantiomer of (S,S)-Jacobsen ligand, widely used as chiral ligand in enantioselective organic reaction, such as asymmetric epoxidation, cyanide reaction, etc.
(R,R)-Jacobsen ligand is synthesized by reaction of (1R,2R)-diaminocyclohexane and 3,5-di-tert-butyl-2-hydroxybenzaldehyde as light-yellow powder. It is available from UCHEM with its precausor, (R,R)-1,2-diaminocyclohexane CAS: 20439-47-8 and its cobalt-complex, (1R,2R)-(-)-N,N-Bis(3,5-di-t-butylsalicylidene)-1,2-cyclohexanediaminocobalt(II) CAS: 176763-62-5.