Sodium Carbonate → 2-chloro-N'-hydroxybenzene-1-carboximidamide

A mixture of 32 g (0.46 moles) hydroxylamine hydrochloride and 49 g (0.46 moles) sodium carbonate in ethanol (about 200 ml) was stirred at room temperature for several minutes; then, 52.4 g (0.381 moles) chlorobenzonitrile was added slowly. The reaction mixture was heated to reflux and allowed to reflux about 6 hours. The reaction mixture was cooled at room temperature and suction-filtered. The solids were washed with acetone. The acetone washings were combined with the filtrate; the combined filtrate-washings were stripped. Acetone (about 200 ml) was added to the residue; the resulting mixture was allowed to sit overnight at room temperature. The mixture was filtered. The filtrate was stripped to give the crude product which was washed with hexane and ethyl ether, suction-filtered, and then air-dried to give the above-identified product as an off-white solid.

1. temperatureThe reaction mixture was heated
2. temperatureto reflux
3. temperatureto reflux about 6 hours
4. temperatureThe reaction mixture was cooled at room temperature
5. filtrationsuction-filtered
6. washThe solids were washed with acetone
7. additionAcetone (about 200 ml) was added to the residue
8. filtrationThe mixture was filtered
9. customto give the crude product which
10. washwas washed with hexane and ethyl ether
11. filtrationsuction-filtered
12. customair-dried

ORD record

ord-56a485b3e4d642388fbcd170b1b45412

Source dataset

uspto-grants-1986_04

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US04584317