Ketene o,o-acetals and their preparation

Details Ketene o,o-acetals and their preparation Ketene o,o-acetals and their preparation

C - Chemistry, Metallurgy

07

C

260/558.4, 260/6

C07C 43/313 (2006.01) C07C 41/48 (2006.01) C07D 521/00 (2006.01)

Patent

CA 1210026

- 14 - Abstract of the Disclosure: Useful novel ketene 0,0- acetals of the formula I Image I, where R1 is a tertlary alkyl radical of 4 to 6 carbon atoms or unsubstituted or halogen-substituted phenyl, R2 is hydrogen and R3 and R4 independently of one another are each phenyl which is unsubstituted or substituted by halogen, alkoxy, alkyl, phenyl, phenoxy, cyano, nitro or trifluoromethyl, their preparation and their use for the preparation of ketene 0,N-acetals.

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