Acryloyl chloride → (2E)-3-(2-propan-2-ylphenyl)-2-[(Z)-[4-[1-[4-(trifluoromethoxy)phenyl]-1,2,4-triazol-3-yl]phenyl]methylidenehydrazinylidene]-1,3-thiazinan-4-one

HRID 1404864Notes

Reaction equation

HRID 1404864 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:38](Cl)(=[O:41])[CH:39]=[CH2:40]>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[C:38](=[O:41])[CH2:39][CH2:40][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

5

Reactant 2

HCID 13140Acryloyl chlorideHCID 885903141-(2-propan-2-ylphenyl)-3-[(E)-[4-[1-[4-(trifluoromethoxy)phenyl]-1,2,4-triazol-3-yl]phenyl]methylideneamino]thiourea

Product 1

HCID 68157137(2E)-3-(2-propan-2-ylphenyl)-2-[(Z)-[4-[1-[4-(trifluoromethoxy)phenyl]-1,2,4-triazol-3-yl]phenyl]methylidenehydrazinylidene]-1,3-thiazinan-4-oneYield 23%

Reagents, catalysts & solvents 2

HCID 6344DichloromethaneSolventHCID 6569Methyl Ethyl KetoneSolvent

Procedure

To (E)-N-(2-isopropylphenyl)-2-(4-(1-(4-(trifluoromethoxy)phenyl)-1H-1,2,4-triazol-3-yl)benzylidene)hydrazinecarbothioamide (500 mg, 0.953 mmol) in butanone (9.5 ml) was added acryloyl chloride (0.077 ml, 0.953 mmol). The reaction was stirred at ambient temperature for 10 min followed by 50° C. for 2 h. The reaction was cooled to 40° C. overnight. The reaction was determined to be complete by LCMS. The reaction mixture was diluted with DCM and washed with saturated sodium bicarbonate. The aqueous layer was extracted with DCM. The organic layers were poured through a phase separator and concentrated. Purification by flash column chromatography provided a yellow oil. The oil was recrystallized with diethyl ether/hexanes to provide the title compound as a light yellow solid (125 mg, 0.217 mmol, 23%): mp 118° C. (dec); 1H NMR (400 MHz, CDCl3) δ 8.57 (s, 1H), 8.21 (d, J=8.4 Hz, 2H), 8.16 (s, 1H), 7.85-7.75 (m, 4H), 7.46-7.36 (m, 4H), 7.33-7.26 (m, 1H), 7.10 (d, J=7.6 Hz, 1H), 3.26-3.14 (m, 4H), 2.81 (heptet, J=6.9 Hz, 1H), 1.21 (t, J=7.2 Hz, 6H); ESIMS m/z 580 (M+H).

Workup

  1. waitfollowed by 50° C. for 2 h
  2. temperatureThe reaction was cooled to 40° C. overnight
  3. washwashed with saturated sodium bicarbonate
  4. extractionThe aqueous layer was extracted with DCM
  5. additionThe organic layers were poured through a phase separator
  6. concentrationconcentrated
  7. customPurification by flash column chromatography
  8. customprovided a yellow oil
  9. customThe oil was recrystallized with diethyl ether/hexanes

Sources & evidence

ORD record
ord-f016d5d5786a444da8c4b32310660210
Source dataset
uspto-grants-2014_12
Patent number
US08916183B2

Reaction notes

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