Malononitrile → Potassium bromide--dibromopropanedinitrile (1/1/1)

A mixture of 99 g of malononitrile and 75 g of potassium bromide in 900 ml of water was cooled to 5°-10° and, while maintaining the temperature at 5°-10°, 488 g of bromine was added slowly during 2.75 hours. After addition was completed, the mixture was stirred for 2 hours at 5°-10°, and filtered. The collected solid was washed with 150 ml of ice-water and air-dried on the filter to give 356 g of the complex which was used without further purification.

1. temperaturewas cooled to 5°-10°
2. temperaturewhile maintaining the temperature at 5°-10°
3. additionAfter addition
4. filtrationfiltered
5. washThe collected solid was washed with 150 ml of ice-water
6. customair-dried on the
7. filtrationfilter

ORD record

ord-25759bb53f3b42b384cdd117dc5a2474

Source dataset

uspto-grants-1977_11

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US04059433