| 摘要 |
A process for preparing alkyl- or aryloxyacetaldehydes of the formula where R can be an unsubstituted or mono- or polysubstituted alkyl, aryl, heteroaryl, alkaryl, alkylheteroaryl or aralkyl radical or an unsubstituted or mono- or polysubstituted heterocycle or alkyl heterocycle, which comprises reacting a compound of the formula <paragraph lvl="0"><in-line-formula>R-OM (II) </in-line-formula>where R is as defined above and M can be an alkali metal atom or an alkaline earth metal atom, with a compound of the formula where R1 and R2 independently of one another are a C1-C6-alkyl radical or together are a C2-C6-alkylene radical and X is a halogen atom, to form the corresponding dialkylacetal of the formula where R, R1 and R2 are as defined above, whereupon acetal cleavage is carried out to give the desired alkyl- or aryloxyacetaldehydes of the formula (I)
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