2,4-Difluoro-1,1'-biphenyl → 1-(2',4'-Difluoro-4-biphenylyl)-3-methoxypropan-1-one

Beteiligte Stoffe

Reaktionsschritte

A solution of 2.62 g. of 1-(2',4'-difluoro-4-biphenylyl)-3-hydroxypropan-1-one, obtained by acylating 2,4-difluorobiphenyl with 3-methoxypropionyl chloride to give 1-(2',4'-difluoro-4-biphenylyl)-3-methoxypropan-1-one and subsequently effecting ether scission, in 20 ml. of THF is added dropwise, at 20° to stirred Grignard solution prepared from 3 g. of methyl iodide and 0.5 g. of magnesium in 100 ml. of ether. The mixture is stirred for 4 hours more and the resulting alcoholate is decomposed with water and dilute sulfuric acid. The reaction mixture is worked up in the customary manner to give 3-(2',4'-difluoro-4-biphenylyl)butane-1,3-diol, m.p. 82°-84°.

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