| 摘要 |
1,248,869. Preparation of nitrites. SANDOZ Ltd. 23 Dec., 1969, No. 62638/69. Addition to 1,220,781. Heading C2C. Nitriles are prepared by heating alkaline earth metal salts of carboxylic acids with urea in the presence of amidosulphonic acid. The exemplified product is 2-chlorobenzonitrile. |
