Toluene → HCID 86618041, compound

1M toluene solution of diisobutylaluminum hydride (52.2 ml, 52.2 mmol) was added dropwise to an anhydrous diethyl ether (37.5 ml) solution of ethyl-(2E,5E,7S,8S)-3,7-dimethyl-8-[(triethylsilyl)oxy]deca-2,5-dienoate (8.92 g, 25.20 mmol) at −78° C. and the reaction solution was stirred at the same temperature for one hour. Methanol (1 ml) and a saturated potassium sodium tartrate tetrahydrate aqueous solution (9.3 ml) were added to the reaction solution, and the mixture was warmed to room temperature and stirred for two hours. After the organic layer was dried over anhydrous sodium sulfate and the drying agent was filtered off, the organic layer was concentrated under reduced pressure. The obtained residue was purified by silica gel column chromatography (Merck, commercial name Silica Gel 60, 230-400 mesh; hexane:diethyl ether=8:1) to obtain the title compound (3.84 g) as a colorless oil. 1H-NMR data of the title compound obtained by (2-2) is completely identical to those of the title compound obtained by (2-1).

1. stirringstirred for two hours
2. dry with materialAfter the organic layer was dried over anhydrous sodium sulfate
3. filtrationthe drying agent was filtered off
4. concentrationthe organic layer was concentrated under reduced pressure
5. customThe obtained residue was purified by silica gel column chromatography (Merck, commercial name Silica Gel 60, 230-400 mesh; hexane:diethyl ether=8:1)

ORD record

ord-9ccc489d0ccd4bbc9a41f71359a9da54

Source dataset

uspto-grants-2011_02

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US07884128B2