Process for preparing alkyl- or aryloxyacetaldehydes

Details Process for preparing alkyl- or aryloxyacetaldehydes Process for preparing alkyl- or aryloxyacetaldehydes

C - Chemistry, Metallurgy

07

C

C07C 47/277 (2006.01) C07C 45/51 (2006.01) C07C 45/56 (2006.01) C07C 47/198 (2006.01) C07C 201/12 (2006.01) C07C 205/29 (2006.01) C07C 253/30 (2006.01) C07C 255/13 (2006.01)

Patent

CA 2352402

A process for preparing alkyl- or aryloxyacetaldehydes of the formula Image 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 R-OM (III) 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 Image 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 Image 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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