| abstract |
(57) [Summary] [Object] To provide a novel aromatic aldehyde spiro acetal compound which is useful as a light stabilizer for various organic materials or an intermediate thereof, and can also be used as an intermediate of medicines, agricultural chemicals and the like. [Structure] An aromatic aldehyde spiro acetal compound represented by the following general formula [I]. [Chemical 1] [In the formula, R 1 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms. R 2 represents a hydrogen atom or a methyl group. R 3 And R 4 are both hydrogen atoms, R 3 is a hydrogen atom, and 4 is --CH2-R 5 or R 3, R 4 together = CH-R 5, represents either (but,, R 5 is A substituted or unsubstituted phenyl group or cyclohexyl group (wherein the substituent is an alkyl group having 1 to 4 carbon atoms). ]. |