This book was published by High Times back in 73. It has instructions on how to synthesize LSD, THC, Mescaline, MDA, DMT and a few others.
I'm not a chemist, I can barely read this stuff. IDK if the chemicals they talk about using for dmt production are watched, man, idk much. Also, this seems slightly more complex than extraction. I scanned the page relevant to dmt and present it here as a curiosity or historical relic or something. One would assume high times wouldn't just publish BS, so it's probably a valid tek I'd say...
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"Whoever undertakes to set himself up as a judge of Truth and Knowledge is shipwrecked by the laughter of the gods." Albert Einstein
I appreciate your perspective.