| 摘要 |
1,253,330. Azomethines. FARBWERKE HOECHST A.G. 22 May, 1970 [3 June, 1969], No. 24837/70. Heading C2C. The invention comprises compounds of the formula wherein R represents CH 3 or C 2 H 5 , and mixtures of these two compounds with each other. They may be obtained by condensing 4-n-butyl aniline with the appropriate 4-alkoxybenzaldehyde. Examples are given for the preparation of the compounds. |
