Methanol → 2-Aminobenzonitrile

To 2 ml of a solution of 2M of boron trichloride in methylene chloride were added a solution of 0.93 g of aniline in 10 ml of methylene chloride, 1.2 ml of trichloroacetonitrile and 1.2 ml of stannic chloride under ice-cooling. The mixture was refluxed on an oil bath for 24 hr. and poured into a mixture of 16 g of potassium carbonate and 32 ml of methanol under ice-cooling. The mixture was refluxed on an oil bath for 1 hr., filtered to remove the insoluble material and evaporated under reduced pressure. The residue was mixed with water and extracted with ether. The ether layer was washed with dilute HCl, dried over anhydrous magnesium sulfate and evaporated. The residue was purified on a Lobar column. The eluate with 5% ethyl acetate-methylene chloride was evaporated and the residue was recrystallized from ether-petroleum ether to give 0.538 g of anthranilonitrile as crystals melting at 48°-50° C.

1. temperaturecooling
2. temperatureThe mixture was refluxed on an oil bath for 24 hr
3. temperaturecooling
4. temperatureThe mixture was refluxed on an oil bath for 1 hr
5. filtration, filtered
6. customto remove the insoluble material
7. customevaporated under reduced pressure
8. additionThe residue was mixed with water
9. extractionextracted with ether
10. washThe ether layer was washed with dilute HCl
11. dry with materialdried over anhydrous magnesium sulfate
12. customevaporated
13. customThe residue was purified on a Lobar column
14. customThe eluate with 5% ethyl acetate-methylene chloride was evaporated
15. customthe residue was recrystallized from ether-petroleum ether

ORD record

ord-543fd5aad0384563a284d0727b923160

Source dataset

uspto-grants-1988_09

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US04774331