反应详情

A mixture of 12.1 parts of N,N-dimethyl-N'-(4-chloro-3-cyano-5-formylthien-2-yl)-formamidine, 8.2 parts of sodium phenylsulfinate and 70 parts of methylglycol is heated at the boil for 1 hour. The precipitated product is then filtered off under suction when the mixture is cold and is washed with methylglycol and then with water and dried. 9.7 parts of N,N-dimethyl-N'-(3-cyano-5-formyl-4-phenylsulfonylthien-2-yl)-formamidine are obtained.

1. temperatureis heated at the boil for 1 hour
2. filtrationThe precipitated product is then filtered off under suction when the mixture
3. washis washed with methylglycol
4. dry with materialwith water and dried