There's an ebook called 'Pills Of God' on Amazon about one of the guys involved in the discovery of this process, it happened much earlier than 2012 though.
He was a Dutch cook and flew to Shanghai to a factory where they had dozens of tons of PMK they couldn't sell because it had been recently banned. He put 2mil upfront he borrowed off the author of the book and had the factories entire stock converted into this new precursor and shipped a bit to Australia and the rest to Europe. The author of the book was an Australian cook the Dutch guy met when they were both in jail in the US a decade or so earlier.
Unfortunately the dutch cook had a bad stroke and became basically a vegetable, and the Australian guy got busted running the largest MDMA lab my country had ever seen (He pulled off a single reaction yielding more than 500kg of MDMA) and got 25 years hard time in maximum security. You can write to him in prison and he responds, his name is Steven Spaliviero.
Interesting bit of history.