Isoamyl mercaptan → HCID 18965261, compound

Temperature

0 °C

Generate sodium ethoxide by carefully adding sodium metal (620 mg, 27 mmol) to absolute ethanol (25 mL) under nitrogen atmosphere and stirring until evolution of hydrogen gas ceases. Cool to 0° C. and add, by dropwise addition, a solution of 3-methyl-l-butanethiol (2.8 g, 27 mmol) in absolute ethanol (25 mL). Stir for 30 mintutes at 0° C., cool to -70° C. and transfer via cannula to another flask containing a solution of 1-bromo-5-chloropentane (5.0 g, 27 mmol) in absolute ethanol (25 mL) at -30° C. Stir at -30° C. for 30 minutes, then allow to warm to room temperature and stir overnight. Add additional sodium ethoxide and stir for 30 minutes at room temperature. Concentrate in vacuo, partition between water and ethyl ether and separate the organic phase. Extract the aqueous phase with ethyl ether (2×50 mL), combine the organic phases and dry (MgSO4). Evaporate the solvent in vacuo to yield 4.89 g of 5-chloropentyl isopentyl sulfide as a clear oil; MS (CI/CH4) m/z 209(M+1), 173(M+1-HCl).

1. additionadd, by dropwise addition
2. temperaturecool to -70° C.
3. stirringStir at -30° C. for 30 minutes
4. temperatureto warm to room temperature
5. stirringstir overnight
6. stirringstir for 30 minutes at room temperature
7. concentrationConcentrate in vacuo
8. custompartition between water and ethyl ether
9. customseparate the organic phase
10. extractionExtract the aqueous phase with ethyl ether (2×50 mL)
11. dry with materialdry (MgSO4)
12. customEvaporate the solvent in vacuo

ORD record

ord-0f655ed9f87a4904b4fe7950585d5690

Source dataset

uspto-grants-1994_09

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US05348964