Ethyl isocyanate → (E)-1-Ethyl-3-((4-(4,4,4-trifluoro-3-(3,4,5-trichlorophenyl)but-1-en-1-yl)naphthalen-1-yl)methyl)urea

HRID 587273Notes

Reaction equation

[F:1][C:2]([F:28])([F:27])[CH:3]([C:18]1[CH:23]=[C:22]([Cl:24])[C:21]([Cl:25])=[C:20]([Cl:26])[CH:19]=1)/[CH:4]=[CH:5]/[C:6]1[C:15]2[C:10](=[CH:11][CH:12]=[CH:13][CH:14]=2)[C:9]([CH2:16][NH2:17])=[CH:8][CH:7]=1.[CH2:29]([N:31]=[C:32]=[O:33])[CH3:30]>C(Cl)Cl>[CH2:29]([NH:31][C:32]([NH:17][CH2:16][C:9]1[C:10]2[C:15](=[CH:14][CH:13]=[CH:12][CH:11]=2)[C:6](/[CH:5]=[CH:4]/[CH:3]([C:18]2[CH:19]=[C:20]([Cl:26])[C:21]([Cl:25])=[C:22]([Cl:24])[CH:23]=2)[C:2]([F:1])([F:27])[F:28])=[CH:7][CH:8]=1)=[O:33])[CH3:30]

Participants

Conditions

Temperature: 0 °C

Procedure

To a stirred solution of (E)-(4-(4,4,4-trifluoro-3-(3,4,5-trichlorophenyl)but-1-en-1-yl)naphthalen-1-yl)methanamine (0.1 g, 0.22 mmol) in CH2Cl2 at 0° C. were added TEA (0.064 mL, 0.44 mmol) and ethylisocyanate (0.023 mL, 0.33 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% EtOAc in hexane) afforded the title compound as a solid (0.07 g, 60%): mp 84-87° C.; 1H NMR (400 MHz, CDCl3) δ 8.06 (m, 1H), 7.98 (m, 1H), 7.61 (m, 3H), 7.48 (s, 2H), 7.44 (d, J=8.0 Hz, 1H), 7.38 (m, 2H), 6.42 (m, 1H), 4.92 (s, 2H), 4.6 (br s, 1H), 4.24 (m, 1H), 3.21 (m, 2H), 1.2 (t, J=4.6 Hz, 3H); ESIMS m/z 515.33 ([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% EtOAc in hexane)

Sources & evidence

ORD record: ord-812eed5edbd94704983d60489496e336
Source dataset: uspto-grants-2016_01
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09226500B2

Reaction notes

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