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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 505282Generated: October 30, 2026

Acetaldehyde → HCID 16658871, compound

https://huagongshe.com/reaction/505282

Reaction equation

Participants

RoleNameHCIDCharge
ReactantAcetaldehydeHCID 177—
ReactantSodium triacetoxyborohydrideHCID 5049666—
ReactantHCID 24896053HCID 24896053—
Solvent1,1-DichloroethaneHCID 6365—
SolventEthyl AcetateHCID 8857—
ProductHCID 16658871HCID 16658871—

Reaction Steps

To a solution of (4S,5R)-5-[3,5-bis(trifluoromethyl)phenyl]-3-[2-[(cyclobutylamino)methyl]-5-(trifluoromethyl)benzyl]-4-methyl-1,3-oxazolidin-2-one (3.6 mg, 6.50×10−3 mmol) in dichloroethane (300 μL) was added acetaldehyde (40 μL, 0.709 mmol) and NaBH(OAc)3 (excess). The reaction was stirred at room temperature for 2 hours and then diluted with EtOAc (10 mL) and washed with brine (5 mL). The organic layer was dried over Na2SO4, filtered, and concentrated. Purification of the residue by PTLC (25% EtOAc/hexanes) afforded (4S,5R)-5-[3,5-bis(trifluoromethyl)phenyl]-3-[2-{[cyclobutyl(ethyl)amino]methyl}-5-(trifluoromethyl)benzyl]-4-methyl-1,3-oxazolidin-2-one. Rf=0.69 (25% EtOAc/hexanes). LCMS=583.2 (M+1)+. 1H NMR (CDCl3, 500 MHz) δ 7.90 (s, 1H), 7.80 (s, 2H), 7.54-7.52 (m, 3H), 5.74 (d, J=8.0 Hz, 1H), 4.99 (d, J=16.1 Hz, 1H), 4.65 (d, J=16.2 Hz, 1H), 4.04-3.98 (m, 1H), 3.64 (d, J=13.9 Hz, 1H), 3.47 (d, J=13.9 Hz, 1H), 3.18-3.12 (m, 1H), 2.48-2.39 (m, 2H), 1.98-1.92 (m, 2H), 1.87-1.74 (m, 2H), 1.67-1.58 (m, 2H), 0.90 (t, J=7.2 Hz, 3H), 0.80 (d, J=6.6 Hz, 3H).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07781426B2
Source datasetuspto-grants-2010_08
ORD IDord-95bbd5107c49418c9014af53ce8edeb2
Source noteuspto-grants-2010_08