Veratraldehyde → (3,4-Dimethoxyphenyl)-[4-(5-methyl-[1,2,4]oxadiazol-3-yl)phenylamino]acetonitrile

HRID 1698696Notes

Reaction equation

HRID 1698696 reaction equation
[CH3:1][C:2]1[O:6][N:5]=[C:4]([C:7]2[CH:12]=[CH:11][C:10]([NH2:13])=[CH:9][CH:8]=2)[N:3]=1.[CH3:14][O:15][C:16]1[CH:17]=[C:18]([CH:21]=[CH:22][C:23]=1[O:24][CH3:25])[CH:19]=O.C[Si]([C:30]#[N:31])(C)C.C(S([O-])(=O)=O)(F)(F)F.C(S([O-])(=O)=O)(F)(F)F.C(S([O-])(=O)=O)(F)(F)F.[Yb+3]>ClCCl.C(OCC)(=O)C>[CH3:14][O:15][C:16]1[CH:17]=[C:18]([CH:19]([NH:13][C:10]2[CH:11]=[CH:12][C:7]([C:4]3[N:3]=[C:2]([CH3:1])[O:6][N:5]=3)=[CH:8][CH:9]=2)[C:30]#[N:31])[CH:21]=[CH:22][C:23]=1[O:24][CH3:25]

Participants

7

Reactant 4

HCID 8419VeratraldehydeHCID 82115Trimethylsilyl cyanideHCID 2733225Ytterbium triflateHCID 181881764-(5-Methyl-1,2,4-oxadiazol-3-yl)aniline

Product 1

HCID 59517365(3,4-Dimethoxyphenyl)-[4-(5-methyl-[1,2,4]oxadiazol-3-yl)phenylamino]acetonitrile

Reagents, catalysts & solvents 2

HCID 6344DichloromethaneSolventHCID 8857Ethyl AcetateSolvent

Procedure

After adding 0.887 g of 4-(5-methyl-[1,2,4]oxadiazol-3-yl)phenylamine, 0.831 g of 3,4-dimethoxybenzaldehyde, 1 g of MS3A and 1 ml of trimethylsilyl cyanide to a solution of 0.31 g of Yb(OTf)3 in 20 ml of dichloromethane under a nitrogen atmosphere, the mixture was stirred at room temperature for 22 hours. After then adding 200 ml of ethyl acetate to the reaction mixture, it was filtered through celite and the celite was washed with 200 ml of ethyl acetate. The organic layers were combined and washed with water and saturated brine, and then dried over anhydrous magnesium sulfate. The desiccating agent was filtered off and the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography (ethyl acetate-heptane) to give the title compound (1.75 g) as a light yellow solid.

Workup

  1. filtrationwas filtered through celite
  2. washthe celite was washed with 200 ml of ethyl acetate
  3. washwashed with water and saturated brine
  4. dry with materialdried over anhydrous magnesium sulfate
  5. filtrationThe desiccating agent was filtered off
  6. concentrationthe filtrate was concentrated under reduced pressure
  7. customThe residue was purified by silica gel column chromatography (ethyl acetate-heptane)

Sources & evidence

ORD record
ord-82105202403448759144950320115144
Source dataset
uspto-grants-2012_04
Patent number
US08163787B2

Reaction notes

Loading…