摘要 |
The invention relates to a process for the preparation of compounds of formula (I) <IMAGE> wherein R1 stands for hydrogen or the group COR2, wherein R2 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) <IMAGE> wherein X stands for chlorine or bromine and R2 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. |
申请人 |
CHINOIN GYOGYSZER ES VEGYESZETI TERMEKEK GYARA R.T.,HU |
发明人 |
HEJA,GERGELY,HU;KORBONITS,DEZSOE,HU;PALOSI,ENDRE,HU;KISS,PAL,HU;GOENCZI,CSABA,HU;SZVOBODA,IDA,HU;MARVANYOS,EDE,HU;KUN,JUDIT,HU;SZOMOR,MARIA,HU;SZABO,GABOR,HU;KALLAY,TAMAS,HU;LEDNICZKY,LASZLO,HU |