Pentane → n-Butyldiisopropylsilane

Temperature

65 °C

Diisopropylchlorosilane (13.1 mL, 76.8 mmol) was dissolved in THF (75 mL), and n-butylmagnesium chloride THF solution (0.84M, 100 mL, 84 mmol) was added dropwise thereto in a nitrogen atmosphere for 10 minutes. Subsequently, cuprous bromide (286 mg, 2.00 mmol) was added to the resultant mixture, followed by stirring at 65° C. for 8 hours. The reaction mixture was left to cool, and saturated aqueous ammonium chloride and n-pentane were added thereto. The formed organic layer was washed three times with water and once with saturated brine, and the thus-washed layer was dried over sodium sulfate anhydrate. The solvent was removed, followed by purification through distillation under reduced pressure, whereby the Compound 47a was obtained as a colorless liquid (boiling point; 50 mmHg, 93.2 to 95.5° C. fraction, 8.43 g, 64%).

1. waitThe reaction mixture was left
2. temperatureto cool
3. washThe formed organic layer was washed three times with water
4. dry with materialonce with saturated brine, and the thus-washed layer was dried over sodium sulfate anhydrate
5. customThe solvent was removed
6. distillationfollowed by purification through distillation under reduced pressure, whereby the Compound 47a
7. customwas obtained as a colorless liquid (boiling point; 50 mmHg, 93.2 to 95.5° C. fraction, 8.43 g, 64%)

ORD record

ord-9bd0f5159ef54211b03ee1327966cb37

Source dataset

uspto-grants-2010_11

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US07825103B2