Water → (3-Methyldodec-1-enyl)benzene

Temperatur

0 °C

A suspension of benzyltriphenylphosphonium bromide (3.20 g, 7.38 mmol, 1.0 equiv.) in THF (14 mL), was cooled to 0° C. After adding n-BuLi (1.6 M in hexanes, 4.6 mL, 7.38 mmol, 1.0 equiv.) at 0° C., the red suspension was stirred at 65° C. for 1 h. The mixture was re-cooled to 0° C., 2-methylundecanal (2.04 g, 11.1 mmol, 1.5 equiv.) in THF (5 mL) was added, and the mixture was stirred at 65° C. for 18 h. After addition of H2O, the aqueous layer was extracted with cyclohexane (2×), the combined organic phases were washed with brine, dried (MgSO4), filtered and the filtrate was concentrated. The residue was purified by flash chromatography on SiO2 (cyclohexane) to yield 1.45 g (76%) of the title compound as a colorless oil.

1. temperatureThe mixture was re-cooled to 0° C.
2. stirringthe mixture was stirred at 65° C. for 18 h
3. extractionthe aqueous layer was extracted with cyclohexane (2×)
4. washthe combined organic phases were washed with brine
5. dry with materialdried (MgSO4)
6. filtrationfiltered
7. concentrationthe filtrate was concentrated
8. customThe residue was purified by flash chromatography on SiO2 (cyclohexane)

ORD-Eintrag

ord-9e38102faaea4ff3885e8e3ef19f18e4

Quelldatensatz

uspto-grants-2015_11

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US09193935B2