| 摘要 |
1,137,505. Azines. FISONS INDUSTRIAL CHEMICALS. 4 April, 1966 [23 April, 1965], No. 17161/65. Heading C2C. [Also in Division C1] Azines are produced by reacting an aqueous hypochlorite salt with aqueous ammonia in the absence of carbonyl compounds to form chloramine and reacting this with a carbonyl compound and aqueous ammonia to form the azine of the carbonyl compound used. The preferred hypochlorite salt is sodium hypochlorite. The carbonyl compound used in the second stage may have the formula in which R 1 is hydrogen, alkyl and R 2 is alkyl or aryl or R 1 and R 2 together with the carbon atom to which they are attached form a cycloaliphatic ring. Suitable carbonyl compounds are, for example, acetaldehyde, propionaldehyde, methyl isobutyl ketone, diethyl ketone, benzaldehyde, cyclohexanone and, particularly, acetone and methyl ethyl ketone. |
