CBD to d9THC cyclization via borontrifluoro etharate.

Anyone have any first hand experience with this reaction? I've seen it mentioned numerous times in literature, but have yet to find anyone who's carried it out. Said to result in 97% conversion with an 85% preference to forming d9 (with the remaineder being iso-thc) in 2 hours at 0°C. All I see is conversion using pTSA or zeolite to primarily d8.