1-Bromo-2-Chloroethane → (Z)-3-(2-propan-2-ylphenyl)-N-[(Z)-[4-[1-[4-(trifluoromethoxy)phenyl]-1,2,4-triazol-3-yl]phenyl]methylideneamino]-1,3-thiazolidin-2-imine

HRID 1404860Notes

Reaction equation

HRID 1404860 reaction equation
[CH:1]([C:4]1[CH:9]=[CH:8][CH:7]=[CH:6][C:5]=1[NH:10][C:11]([NH:13]/[N:14]=[CH:15]/[C:16]1[CH:21]=[CH:20][C:19]([C:22]2[N:26]=[CH:25][N:24]([C:27]3[CH:32]=[CH:31][C:30]([O:33][C:34]([F:37])([F:36])[F:35])=[CH:29][CH:28]=3)[N:23]=2)=[CH:18][CH:17]=1)=[S:12])([CH3:3])[CH3:2].C(=O)([O-])[O-].[K+].[K+].Br[CH2:45][CH2:46]Cl>CC(=O)CC.C(Cl)Cl>[CH:1]([C:4]1[CH:9]=[CH:8][CH:7]=[CH:6][C:5]=1[N:10]1[CH2:46][CH2:45][S:12]/[C:11]/1=[N:13]/[N:14]=[CH:15]\[C:16]1[CH:17]=[CH:18][C:19]([C:22]2[N:26]=[CH:25][N:24]([C:27]3[CH:28]=[CH:29][C:30]([O:33][C:34]([F:37])([F:35])[F:36])=[CH:31][CH:32]=3)[N:23]=2)=[CH:20][CH:21]=1)([CH3:3])[CH3:2]

Participants

6

Reactant 3

HCID 78491-Bromo-2-ChloroethaneHCID 11430Potassium CarbonateHCID 885903141-(2-propan-2-ylphenyl)-3-[(E)-[4-[1-[4-(trifluoromethoxy)phenyl]-1,2,4-triazol-3-yl]phenyl]methylideneamino]thiourea

Product 1

HCID 68157018(Z)-3-(2-propan-2-ylphenyl)-N-[(Z)-[4-[1-[4-(trifluoromethoxy)phenyl]-1,2,4-triazol-3-yl]phenyl]methylideneamino]-1,3-thiazolidin-2-imineYield 61.2%

Reagents, catalysts & solvents 2

HCID 6344DichloromethaneSolventHCID 6569Methyl Ethyl KetoneSolvent

Conditions

Temperature
90 °C

Procedure

To (E)-N-(2-isopropylphenyl)-2-(4-(1-(4-(trifluoromethoxy)phenyl)-1H-1,2,4-triazol-3-yl)benzylidene)hydrazinecarbothioamide (214 mg, 0.407 mmol) and potassium carbonate (225 mg, 1.63 mmol) in butanone (4 ml) was added 1-bromo-2-chloroethane (70.0 mg, 0.489 mmol). The reaction was heated to 90° C. overnight. The reaction was determined to be complete by LCMS. The reaction mixture was cooled, diluted with DCM and washed with water. The aqueous layer was extracted with DCM. The organic layers were filtered through a phase separator and concentrated. Separation by flash column chromatography and drying the recovered solid at 55° C. under vacuum provided the title compound as a white solid (137 mg, 0.249 mmol, 61%): mp 193-196° C.; 1H NMR (400 MHz, CDCl3) δ 8.56 (s, 1H), 8.22 (s, 1H), 8.17 (d, J=8.4 Hz, 2H), 7.80 (ddd, J=9.5, 6.9, 4.9 Hz, 4H), 7.43-7.33 (m, 4H), 7.31-7.21 (m, 2H), 4.05 (td, J=9.4, 7.1 Hz, 1H), 3.97-3.87 (m, 1H), 3.42-3.33 (m, 1H), 3.33-3.24 (m, 1H), 3.12 (heptet, J=6.8 Hz, 1H), 1.27 (d, J=6.8 Hz, 3H), 1.22 (d, J=6.9 Hz, 3H); ESIMS m/z 552 (M+H).

Workup

  1. temperatureThe reaction mixture was cooled
  2. washwashed with water
  3. extractionThe aqueous layer was extracted with DCM
  4. filtrationThe organic layers were filtered through a phase separator
  5. concentrationconcentrated
  6. customSeparation by flash column chromatography
  7. customdrying the recovered solid at 55° C. under vacuum

Sources & evidence

ORD record
ord-e8e1b32538b649d885ce418801fbeace
Source dataset
uspto-grants-2014_12
Patent number
US08916183B2

Reaction notes

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