Verfahren zur Herstellung von Para-bromphenoxyacetaldehyd-dialkylacetal-Derivaten.

摘要

There is disclosed a process for preparing a p-bromophenoxyacetaldehyde dialkylacetal derivative represented by the formula: wherein R<1> and R<2> each represent a hydrogen atom or a lower alkyl group and R<3> represents an alkyl group having 1 to 6 carbon atoms, which comprises reacting a bromine to a phenoxyacetaldehyde dialkylacetal represented by the formula: wherein R<1>, R<2> and R<3> have the same meanings as defined above, and then the reaction mixture is treated with an alkali metal hydroxide or alcoholate dissolved in an alcohol represented by the formula: R<3>OH wherein R<3> has the same meaning as defined above. e