Process for the preparation of diphenyl ether derivatives

Details Process for the preparation of diphenyl ether derivatives Process for the preparation of diphenyl ether derivatives

C - Chemistry, Metallurgy

07

C

260/472, 260/476

C07C 43/295 (2006.01) C07C 29/14 (2006.01) C07C 43/263 (2006.01) C07C 69/02 (2006.01) C07C 69/76 (2006.01)

Patent

CA 1202319

ABSTRACT The invention relates to a process for the preparation of compound 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, napthyl, tetrahydronapthyl or m-pnenoxy-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 napthyl. 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.

381574

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