Water → 2-(3,7,11,15-Tetramethyl-2-hexadecaen-1-ylthio)ethylamine

Temperature

20 °C

Under an atmosphere of argon, sodium hydride (9.60 g, 240 mmol, 60% dispersion in mineral oil) was added to a solution of 2-aminoethanethiol (15.3 g, 200 mmol) in 200 ml of tetrahydrofuran and the mixture was stirred at 20° C. for 30 minutes. To the reaction mixture, 18-crown-6 (50 mg, 0.190 mmol) was added and then a solution of phytyl chloride (1-chloro-3,7,11,15-tetramethyl-2-hexadecaene) [55.0 g, 175 mmol, prepared as described in Item a) given above] in 200 ml of tetrahydrofuran was added in dropwise for an hour at below 10° C. After stirring at 20°-30° C. for 24 hours, water was added to the reaction mixture until forming did not occur. The solvent was evaporated in vacuo to dryness and the remaining residue was extracted with ethyl ether. The ether layer was washed twice with water and an aqueous solution saturated with sodium chloride, dried over anhydrous sodium sulfate, filtered and evaporated in vacuo to dryness. The remaining residue was chromatographed on silica gel, eluting with CH2Cl2 /MeOH (10:1) to afford 50.9 g (81.8%) of the desired compound, as a pale brown oil.

1. additionwas added in dropwise for an hour at below 10° C
2. stirringAfter stirring at 20°-30° C. for 24 hours
3. customuntil forming
4. customThe solvent was evaporated in vacuo to dryness
5. extractionthe remaining residue was extracted with ethyl ether
6. washThe ether layer was washed twice with water
7. dry with materialan aqueous solution saturated with sodium chloride, dried over anhydrous sodium sulfate
8. filtrationfiltered
9. customevaporated in vacuo to dryness
10. customThe remaining residue was chromatographed on silica gel
11. washeluting with CH2Cl2 /MeOH (10:1)

ORD record

ord-7f6bf00dcab041b0bf8908109d807b78

Source dataset

uspto-grants-1993_01

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US05177102