Acetaldehyde → HCID 16658871, compound

HRID 505282Notes

Reaction equation

HRID 505282 reaction equation
[F:1][C:2]([F:38])([F:37])[C:3]1[CH:4]=[C:5]([C@H:13]2[O:17][C:16](=[O:18])[N:15]([CH2:19][C:20]3[CH:25]=[C:24]([C:26]([F:29])([F:28])[F:27])[CH:23]=[CH:22][C:21]=3[CH2:30][NH:31][CH:32]3[CH2:35][CH2:34][CH2:33]3)[C@H:14]2[CH3:36])[CH:6]=[C:7]([C:9]([F:12])([F:11])[F:10])[CH:8]=1.[CH:39](=O)[CH3:40].[BH-](OC(C)=O)(OC(C)=O)OC(C)=O.[Na+]>ClC(Cl)C.CCOC(C)=O>[F:38][C:2]([F:1])([F:37])[C:3]1[CH:4]=[C:5]([C@H:13]2[O:17][C:16](=[O:18])[N:15]([CH2:19][C:20]3[CH:25]=[C:24]([C:26]([F:27])([F:28])[F:29])[CH:23]=[CH:22][C:21]=3[CH2:30][N:31]([CH:32]3[CH2:35][CH2:34][CH2:33]3)[CH2:39][CH3:40])[C@H:14]2[CH3:36])[CH:6]=[C:7]([C:9]([F:11])([F:10])[F:12])[CH:8]=1

Participants

6

Reactant 3

HCID 177AcetaldehydeHCID 5049666Sodium triacetoxyborohydrideHCID 24896053HCID 24896053, compound

Product 1

HCID 16658871HCID 16658871, compound

Reagents, catalysts & solvents 2

HCID 63651,1-DichloroethaneSolventHCID 8857Ethyl AcetateSolvent

Procedure

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).

Workup

  1. washwashed with brine (5 mL)
  2. dry with materialThe organic layer was dried over Na2SO4
  3. filtrationfiltered
  4. concentrationconcentrated
  5. customPurification of the residue by PTLC (25% EtOAc/hexanes)

Sources & evidence

ORD record
ord-95bbd5107c49418c9014af53ce8edeb2
Source dataset
uspto-grants-2010_08
Patent number
US07781426B2

Reaction notes

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