Tert-Butylamine → HCID 20471873, compound

Temperature

50 °C

At a temperature of 30° to 50° C., 248 gm (1.35 mol) of sodium 5-methyl-furan-2-sulfonate were admixed in portions with 281 gm (1.35 mol) of phosphorus pentachloride and the mixture was stirred for 15 minutes at 50° C. The reaction mixture was then poured over ice and extracted with ether. The ether phase was washed until neutral, dried and evaporated. The residue (200 gm of 5-methyl-furan-2-sulfonic acid chloride) was dissolved in 500 ml of ether, and the solution was added dropwise to a solution of 280 ml (2.7 mol) of tert.-butylamine in 500 ml of ether at a temperature of 5° to 10° C. After stirring at room temperature and at reflux temperature, each for 2 hours, the reaction mixture was washed with ice water, dilute hydrochloric acid and water and then evaporated. The residue was recrystallized from cyclohexane, yielding 180.5 gm (61.5% of theory) of N-tert. butyl-5 -methyl-furan-2-sulfonamide. M.p. 113°-114° C.

1. additionThe reaction mixture was then poured over ice
2. extractionextracted with ether
3. washThe ether phase was washed until neutral,
4. customdried
5. customevaporated
6. dissolutionThe residue (200 gm of 5-methyl-furan-2-sulfonic acid chloride) was dissolved in 500 ml of ether
7. stirringAfter stirring at room temperature
8. temperatureat reflux temperature
9. waiteach for 2 hours
10. washthe reaction mixture was washed with ice water, dilute hydrochloric acid and water
11. customevaporated
12. customThe residue was recrystallized from cyclohexane

ORD record

ord-9422869b82db4cf38345ff8886fce862

Source dataset

uspto-grants-1980_11

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US04233333