Hydrochloric Acid → HCID 54231229, compound

Temperature

-78 °C

6.91 Grams of ethyl (E)-2-fluoro-5-(tertbutyldimethylsilyloxy)-2-pentenoate was dissolved in 50 ml of hexane under a nitrogen atmosphere. The resulting solution was cooled to -78° C. in a dry ice-acetone bath, and 26 ml of diisobutylaluminum hydride (as 1.0 M hexane solution) was added dropwise. After additon, the solution was stirred at -78° C. for 1 hour. The reaction solution was poured into cooled 5% hydrochloric acid, and after separating the hexane layer, the aqueous layer was extracted twice with ether. The ether extracts were combined with the above hexane layer, and this mixture was washed with a saturated aqueous sodium chloride solution and dried over anhydrous magnesium sulfate. The solvent was then removed under reduced pressure to obtain 5.50 g of 2-fluoro-5-(tert-butyldimethylsilyloxy)-2-pentenal [E form/Z form (11:1) mixture by NMR determination].

1. additionThe reaction solution was poured
2. customafter separating the hexane layer
3. extractionthe aqueous layer was extracted twice with ether
4. washthis mixture was washed with a saturated aqueous sodium chloride solution
5. dry with materialdried over anhydrous magnesium sulfate
6. customThe solvent was then removed under reduced pressure

ORD record

ord-283b07303eaf44c296da567804f81e8a

Source dataset

uspto-grants-1991_04

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US05004753