Seems like it would be way too difficult not even knowing where to acquire them and too attention-garnering to even get them to make this a worthwhile pursuit and the idea should be left well-enough alone, far easier to just import the stuff than to synthesize it. For example, with MDMA too difficult to get safrole (in US), p-benzoquinone (or to synthesize it yourself), things needed to create methylamine (let alone methylamine itself) or the random reagents used in each step, no wonder there are essentially no MDMA labs in US
Can't take a walk in the woods without tripping over sassafras in my part of the country. Nitromethane is just as good as methylamine. The performic epoxidation described by Shulgin works just as well with acetic acid. They will never ban mercury and aluminum.
Chemistry is all around you. Just do more research.