A process for the preparation of the compound of the formula ##STR1## wherein R.sup.1 is OH, which comprises the steps of a) treating the compound of the formula ##STR2## with an inorganic fluoride, of the formula M.sup.2 F wherein M.sup.2 is an alkali metal cation, at an elevated temperature in the presence of a compound of the formula R.sup.4 P.sup.+ Z.sup.- and a compound of the formula R.sup.5 vic (COW).sub.2 wherein R.sup.4 and R.sup.5 are each selected from optionally substituted (C.sub.6 -C.sub.10)aryl and optionally substituted (C.sub.1 -C.sub.6)alkyl, and W is halo; to form the compound of the formula; ##STR3## and b) i) treating the compound of the formula IV with an aqueous solution of a base, of the formula MOH, wherein M is an alkali metal cation, and ii) treating the product of step i) with a mineral acid. A compound of the formula ##STR4## wherein R.sup.1 is selected from the group consisting of, halo, R.sup.7 O, R.sup.7 COO and N(R.sup.8).sub.2 wherein R.sup.7 is (C.sub.1 -C.sub.6)alkyl or (C.sub.6 -C.sub.10)aryl and each R.sup.8 is selected from hydrogen and R.sup.7 with the proviso that R.sup.7 is not methyl when R.sup.1 is R.sup.7 O.
一种制备化合物的方法,其
化学式为##STR1##其中R.sup.1为OH,包括以下步骤:a) 用
化学式为M.sup.2 F的无机
氟化物处理化合物##STR2##,其中M.sup.2是碱
金属阳离子,在存在
化学式为R.sup.4 P.sup.+ Z.sup.-和
化学式为R.sup.5 vic (COW).sub.2的化合物的情况下,在高温下处理;其中R.sup.4和R.sup.5分别选自可选择的取代(C.sub.6 -C.sub.10)芳基和可选择的取代(C.sub.1 -C.sub.6)烷基,W为卤素;形成化合物的
化学式;##STR3##和b) i) 用
化学式为MOH的碱性
水溶液处理化合物IV;其中M为碱
金属阳离子,ii) 用矿酸处理步骤i)的产物。一种化合物的
化学式##STR4##其中R.sup.1选自卤素、R.sup.7 O、R.sup.7 COO和N(R.sup.8).sub.2的群,其中R.sup.7为(C.sub.1 -C.sub.6)烷基或(C.sub.6 -C.sub.10)芳基,每个R.sup.8选自氢和R.sup.7,但R.sup.7不是甲基当R.sup.1是R.sup.7 O。