Ethyl isocyanate → (E)-1-(2-chloro-4-(3-(3,5-dichlorophenyl)-4,4,4-trifluorobut-1-en-1-yl)benzyl)-3-ethylurea

HRID 1502885Notes

Reaction equation

[Cl:1][C:2]1[CH:7]=[C:6](/[CH:8]=[CH:9]/[CH:10]([C:15]2[CH:20]=[C:19]([Cl:21])[CH:18]=[C:17]([Cl:22])[CH:16]=2)[C:11]([F:14])([F:13])[F:12])[CH:5]=[CH:4][C:3]=1[CH2:23][NH2:24].[CH2:25]([N:27]=[C:28]=[O:29])[CH3:26]>C(Cl)Cl>[Cl:1][C:2]1[CH:7]=[C:6](/[CH:8]=[CH:9]/[CH:10]([C:15]2[CH:16]=[C:17]([Cl:22])[CH:18]=[C:19]([Cl:21])[CH:20]=2)[C:11]([F:13])([F:14])[F:12])[CH:5]=[CH:4][C:3]=1[CH2:23][NH:24][C:28]([NH:27][CH2:25][CH3:26])=[O:29]

Participants

Conditions

Temperature: 0 °C

Procedure

To a stirred solution of (E)-(2-chloro-4-(3-(3,5-dichlorophenyl)-4,4,4-trifluorobut-1-en-1-yl)phenyl)methanamine (0.2 g, 0.5 mmol) in CH2Cl2 (5 mL) at 0° C. were added TEA (0.141 mL, 1 mmol) and ethylisocyanate (0.053 g, 0.75 mmol), and the reaction mixture was stirred for 1 h at 0° C. The reaction mixture was diluted with CH2Cl2. The organic layer was washed with water and brine, dried over Na2SO4, and concentrated under reduced pressure. Purification by column chromatography (SiO2, 100-200 mesh; 30-50% EtOAc in hexane) afforded the title compound as a solid (0.141 g, 60%): mp 177-178° C.; 1H NMR (400 MHz, CDCl3) δ 7.58 (m, 2H), 7.41 (m, 3H), 7.24 (m, 1H), 6.53 (d, J=16.0 Hz, 1H), 6.35 (dd, J=16.0, 8.0 Hz, 1H), 4.70 (br s, 1H), 4.43 (s, 2H), 4.08 (m, 1H), 3.21 (m, 2H), 1.25 (m, 3H); ESIMS m/z 463 ([M−H]−).

Workup

washThe organic layer was washed with water and brine
dry with materialdried over Na2SO4
concentrationconcentrated under reduced pressure
customPurification by column chromatography (SiO2, 100-200 mesh; 30-50% EtOAc in hexane)

Sources & evidence

ORD record: ord-eda664ac2b1c404e9278d45f9a6c9842
Source dataset: uspto-grants-2015_12
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09211280B2

Reaction notes

Loading…