| 摘要 |
Process for the preparation of 4-cyanothiazole from 4-methylthiazole by the use of an ammoxidation catalyst composed of manganese, chromium and molybdenum oxides in the molecular ratios of MnaCrbMo1.00Ox in which each of a and b, which are the same or different, is from 0.02 to 15 and the sum of a and b is not less than 0.8, and x is a number that satisfies the valences of the metallic elements. Preparation of the catalyst by dissolving watersoluble salts of manganese, chromium and molybdenum in water, evaporating the water, and calcining the resultant dried material. |
