The convenient synthesis of zinc chloride-free 3,7-bis(dialkylamino)phenoxazinium salts

Zinc chloride-free 3,7-bis(dialkylamino)phenoxazinium salts carrying different anions (chloride, bromide, hydrosulfate, tosylate, perchlorate and nitrate) were synthesized with the yields up to 84%. Their structures were determined by spectroscopy and elemental analyses.