反应详情

Bromine (61.4 g, 384 mmol) was added into a solution of triphenylphosphine (100.7 g, 384 mmol) and 450 mL dichloromethane at room temperature under argon protection. Then 2-butylhexanol (60.8 g, 384 mmol) was added dropwise via additional funnel over 50 minutes, the reaction solution was kept to stir at room temperature overnight. Dichloromethane was evaporated, and the concentrate filtered with pentane wash. The filtrate was concentrated via rotary evaporation and the resulting crude yellow oil was purified via vacuum distillation. The title compound was collected as colorless oil (70.8 g, 83.3%). 1H NMR (CDCl3): δ 0.89-0.92 (6H, m), 1.21-1.45 (12H, m), 1.54-1.67 (1H, m), 3.45 (2H, d).

1. customDichloromethane was evaporated
2. filtrationthe concentrate filtered with pentane
3. washwash
4. concentrationThe filtrate was concentrated via rotary evaporation
5. distillationthe resulting crude yellow oil was purified via vacuum distillation
6. customThe title compound was collected as colorless oil (70.8 g, 83.3%)