	US 11,981,651 B2
	Conversion of THC, CBD and their derivatives to Cannabinol
Erick M. Carreira, Zurich (CH); Roman Sarott, Zurich (CH); Patrick Pfaff, Zurich (CH); Konrad Hurni, St-Sulpice (CH); Remo Roth, Gipf-Oberfrick (CH); Sarah Eichenberger, Wallisellen (CH); and Jürg Stäubli, Prangins (CH)
Assigned to SWISS CANNAPHARMACEUTICAL SA, Ecublens (CH); and ETH ZURICH, Zurich (CH)
Filed by Swiss CannaPharmaceutical SA, Ecublens (CH); and ETH Zürich, Zurich (CH)
Filed on Jun. 14, 2022, as Appl. No. 17/839,998.
Claims priority of application No. 21179306 (EP), filed on Jun. 14, 2021.
Prior Publication US 2023/0002341 A1, Jan. 5, 2023
Int. Cl. C07D 311/80 (2006.01)

CPC C07D 311/80 (2013.01) [C07B 2200/07 (2013.01)]

14 Claims

1. Method for aromatizing an alicyclic region of a cannabinoid, wherein an oxidizing agent is added to the cannabinoid, wherein sulfur is used as the oxidizing agent, wherein the cannabinoid is converted to a cannabinol and the cannabinol is CBN-₅and/or CBN-C_3.