Acid Catalyst Comparison for CBD Isomerization: BF3, pTSA, CSA, H2SO4 and More
The Short Answer The catalyst you choose determines which cannabinoid you make, how fast you make it, and how much cleanup you need afterward. BF3 etherate pushes CBD toward delta-9-THC with 70-85% conversion in 1-3 hours at 60-80C (in toluene; never in DCM which boils at 40C). pTSA and CSA favor delta-8-THC through a longer [...]


