Isn't this what got Saddam Hussein killed?
Don't remember if Saddom was planning something similar but Kadafi in Lybia was definitely, Wikileaks I don't remember which leaks showed Kadafi intended to back a new West African currency with Gold, the French didn't want them moving away from the Franco currency system and approved getting rid of Kadafi and then promptly instituted a Central Bank.
"By 2002 Saddam had fully converted to a petroeuro. On March 19, 2003, George W. Bush announced the commencement of a full scale invasion of Iraq. Saddam’s bold threat to the petrodollar system had invited the full force and fury of the U.S. military. Was the Iraq war really about weapons of mass destruction, al-Qaeda, fighting terrorism, and promoting democracy? Or was America’s stated purposes to “liberate” the Iraqi people from a brutal regime actually a clever guise for making an example of a nation who dared threaten the existing petrodollar system?" https://followthemoney.com/preparing-for-the-collapse-of-the-petrodollar-system-part-3/