Assertion: catalyst | /r/HasProperty | prepared
Facets:
value: with a scandium
type: OTHER
value: with soft
type: OTHER
value: with actinoid metal
type: OTHER
value: always
type: DEGREE
value: by separating 1,2-diaminocyclohexane
type: MANNER
Source sentences:
text: Jacobsen's catalyst can be prepared by separating 1,2-diaminocyclohexane into its component enantiomers and then reacting the appropriate tartrate with 3,5-di-tert-butyl-2-hydroxybenzaldehyde to form a Schiff base (see intermediate formed in the reaction scheme below).
text: The catalysts, therefore, are always prepared and handled under an inert atmosphere.
text: These catalysts are first prepared with a scandium or actinoid metal, or soft to dense transition metals.