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US 12,139,456 B2Granted
Vitamin K2 synthesis
AssigneeDsm IP Assets B.V.
InventorsWerner Bonrath, Rolf Kuenzi
Life of this patent
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Abstract
The present invention relates to a new process of production of menaquinone 4, which is also known as vitamin K2.
Claims9
A process for the production of the compound of formula (I):
- wherein R is
- the process comprising reacting a compound of formula (II):
- wherein R is
- with a compound of formula (III):
- in the presence of a heterogeneous triflate catalyst which is a compound of formula (IV):
- wherein M is Al, Bi or Sc.
3 more elements
Dependencies are inferred from the claim text.