Hydroxyl-directed regioselective monodemethylation of polymethoxyarenes Kasturi, L.A.L.; Subrata, G.H.O.S.H.; Salomon, R.G. Journal of Organic Chemistry 52(6): 1072-1078 1987 0022-3263 https://eurekamag.com/research/075/797/075797693.php