Patent ID: 6229055
Filing Date: 2001-05-08
Classification: C07C,C07D,C09B,G01N,Y10S

Abstract:
A method of preparing a fluorinated resorcinol having the formula: ##STR10##whereinR.sup.1, R.sup.2 and R.sup.4 are independently hydrogen, fluorine, chlorine, hydroxy, alkyl having 1-6 carbons or alkoxy having 1-6 carbons;provided at least one of R.sup.1, R.sup.2 and R.sup.4 is fluorine; comprising the steps of:a) treating a substituted nitrofluorobenzene having the formula ##STR11##whereinR.sup.1 and R.sup.2 are independently hydrogen, fluorine, chlorine, alkyl having 1-6 carbons or alkoxy having 1-6 carbons;R.sup.4 is hydrogen, fluorine, chlorine, alkyl having 1-6 carbons, alkoxy having 1-6 carbons or nitro;R.sup.3 and R.sup.5 are independently alkoxy having 1-6 carbons, a benzyloxy or F; andR.sup.6 is H or nitro;provided thatexactly one of R.sup.4 and R.sup.6 is nitro;at least one of R.sup.3 and R.sup.5 is F; andat least one of R.sup.1, R.sup.2 and R.sup.4 is F;with a displacing ion that is an alkoxide ion having 1-6 carbons or a benzyloxide ion to yield a nitroresorcinol diether,b) reducing the said nitroresorcinol diether to yield an aminoresorcinol diether;c) diazotizing said aminoresorcinol diether to yield a resorcinol diether diazonium salt;d) dediazotizing said resorcinol diether diazonium salt to yield a resorcinol diether; ande) cleaving said resorcinol diether to yield said fluorinated resorcinol.