Dichloromethane → N-[2-(6-Chloro-4-formyl-2H-benzotriazol-2-yl)-1-cyano-1-methylethyl]-4-trifluoromethoxybenzamide

HRID 2061995Notes

Reaction equation

HRID 2061995 reaction equation
[Cl:1][C:2]1[CH:3]=[C:4]([CH:30]=C)[C:5]2[C:6]([CH:29]=1)=[N:7][N:8]([CH2:10][C:11]([NH:15][C:16](=[O:28])[C:17]1[CH:22]=[CH:21][C:20]([O:23][C:24]([F:27])([F:26])[F:25])=[CH:19][CH:18]=1)([C:13]#[N:14])[CH3:12])[N:9]=2.C(Cl)Cl.[O:35]=[O+][O-]>CO>[Cl:1][C:2]1[CH:3]=[C:4]([CH:30]=[O:35])[C:5]2[C:6]([CH:29]=1)=[N:7][N:8]([CH2:10][C:11]([NH:15][C:16](=[O:28])[C:17]1[CH:22]=[CH:21][C:20]([O:23][C:24]([F:25])([F:27])[F:26])=[CH:19][CH:18]=1)([C:13]#[N:14])[CH3:12])[N:9]=2

Participants

5

Reactant 3

HCID 6344DichloromethaneHCID 24823OzoneHCID 59327613N-[2-(6-Chloro-4-vinyl-2H-benzotriazol-2-yl)-1-cyano-1-methylethyl]-4-trifluoromethoxybenzamide

Product 1

HCID 59327634N-[2-(6-Chloro-4-formyl-2H-benzotriazol-2-yl)-1-cyano-1-methylethyl]-4-trifluoromethoxybenzamideYield 79%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Conditions

Temperature
-78 °C

Procedure

A solution of N-[2-(6-Chloro-4-vinyl-2H-benzotriazol-2-yl)-1-cyano-1-methylethyl]-4-trifluoromethoxybenzamide (0.29 g) in 35 mL of a 3 to 1 mixture of DCM and methanol was treated with ozone gas for 15 minutes. After stirring one hour at −78° C., the mixture was purged 10 minutes with oxygen and then quenched with dimethyl sulfide followed by a 10% solution of sodium thiosulfate, then diluted with DCM (100 mL). The mixture was separated, and the organic layer was dried over sodium sulfate, filtered and concentrated under reduced pressure to give a residue that was purified by chromatography (SiO2, heptane/EA) to afford the title compound as a white solid (0.23 g, 79%). Rf=0.6 (1:1 EA/heptane). MS (ES): M/Z [M+H]=452. 1H NMR: (400 MHz, CHLOROFORM-d): 1.58 (s, 3H), 5.24 (d, J=13.8 Hz, 1H), 5.47 (d, J=13.8 Hz, 1H), 7.37 (d, J=8.1 Hz, 2H), 7.94 (br. s, 1H), 8.00 (d, J=1.8 Hz, 1H), 8.05 (m, 2H), 8.22 (d, J=1.9 Hz, 1H) and 10.34 (s, 1H). 19F NMR (376 MHz, CHLOROFORM-d): −58.1 (s, 3F).

Workup

  1. customthe mixture was purged 10 minutes with oxygen
  2. customquenched with dimethyl sulfide
  3. additiondiluted with DCM (100 mL)
  4. customThe mixture was separated
  5. dry with materialthe organic layer was dried over sodium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated under reduced pressure
  8. customto give a residue that
  9. customwas purified by chromatography (SiO2, heptane/EA)

Sources & evidence

ORD record
ord-24a388c2aa844c5580f4783558f51ce7
Source dataset
uspto-grants-2012_10
Patent number
US08283475B2

Reaction notes

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