申请人:Chinoin Gyogyszer es Vegyeszeti Termekek Gyara R.T.
公开号:US04709081A1
公开(公告)日:1987-11-24
The invention relates to a process for the preparation of compounds of formula (I) ##STR1## wherein R.sup.1 stands for hydrogen or the group COR.sup.2, wherein R.sup.2 stands for a straight or branched chained alkyl having 1 to 8 carbon atoms optionally substituted with phenyl, naphthyl, tetrahydronaphthyl or m-phenoxy-benzyl, cycloalkyl having 3 to 6 carbon atoms optionally substituted with one or more straight or branched chained alkyl or alkenyl having 1 to 6 carbon atoms, phenyl or naphthyl. The compounds of formula (I) are prepared according to the invention by (a) reacting esters of formula (II) ##STR2## wherein X stands for chlorine or bromine and R.sup.2 has the same meanings as defined above with a phenol alkali metal salt and (b) if desired converting the diphenyl ethers so obtained to a specific compound of formula (I), m-phenoxybenzyl alcohol by the hydrolysis of the ester group.
本发明涉及一种制备式(I)化合物的方法,其中R1代表氢或基团COR2,R2代表直链或支链烷基,其具有1至8个碳原子,可选择地被苯基、萘基、四氢萘基或m-苯氧基苯甲基取代,环烷基具有3至6个碳原子,可选择地被一个或多个直链或支链烷基或烯基取代,其具有1至6个碳原子,苯基或萘基。该式(I)化合物是通过以下方法制备的:(a)将式(II)酯与苯酚碱金属盐反应,其中X代表氯或溴,R2具有上述定义的相同含义;(b)如有需要,通过酯基水解将得到的二苯醚转化为式(I)化合物的特定化合物m-苯氧基苯甲醇。