2-(2-氨基苯基)-1,1,1,3,3,3-六氟丙-2-醇

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a stirred solution of 2-(2-aminophenyl)-1,1,1,3,3,3-hexafluoropropan-2-ol (4.20 g, 16.20 mmol) in THF (160 mL) was added triphosgene (4.80 g, 16.20 mmol). The reaction was stirred overnight, quenched with ammonium chloride solution (sat.) and extracted several times with ethyl acetate. The organic layer was dried over magnesium sulfate and triturated with ether/hexane to give 2.78 g of 4,4-bis(trifluoromethyl)-1,4-dihydro-2H-3,1-benzoxazin-2-one as a tan solid (60%). 1H NMR (DMSO-d6): δ 11.37 (s, 1H), 7.62 (m, 2H), 7.29 (t, J=7.5 Hz, 1H), 7.11 (dd, J=8.0, 0.8 Hz, 1H). MS (ESI) m/z 284 ([M−H]−); HRMS: calcd for C10H5F6NO2, 285.0224; found (ESI_FT), 286.0299; Anal. Calcd for C10H5F6NO2: C, 42.12; H, 1.77; N, 4.91. Found: C, 42.63; H, 1.79; N, 4.72. quenched with ammonium chloride solution (sat.) extracted several times with ethyl acetate The organic layer was dried over magnesium sulfate triturated with ether/hexane

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a stirred solution of 2-(2-aminophenyl)-1,1,1,3,3,3-hexafluoropropan-2-ol (4.20 g, 16.20 mmol) in THF (160 mL) was added triphosgene (4.80 g, 16.20 mmol). The reaction was stirred overnight, quenched with ammonium chloride solution (sat.) and extracted several times with ethyl acetate. The organic layer was dried over magnesium sulfate and triturated with ether/hexane to give 2.78 g of 4,4-bis(trifluoromethyl)-1,4-dihydro-2H-3,1-benzoxazin-2-one as a tan solid (60%). 1H NMR (DMSO-d6): δ 11.37 (s, 1H), 7.62 (m, 2H), 7.29 (t, J=7.5 Hz, 1H), 7.11 (dd, J=8.0, 0.8 Hz, 1H). MS (ESI) m/z 284 ([M−H]−); HRMS: calcd for C10H5F6NO2, 285.0224; found (ESI_FT), 286.0299; Anal. Calcd for C10H5F6NO2: C, 42.12; H, 1.77; N, 4.91. Found: C, 42.63; H, 1.79; N, 4.72. quenched with ammonium chloride solution (sat.) extracted several times with ethyl acetate The organic layer was dried over magnesium sulfate triturated with ether/hexane

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a stirred solution of 2-(2-aminophenyl)-1,1,1,3,3,3-hexafluoropropan-2-ol (4.20 g, 16.20 mmol) in THF (160 mL) was added triphosgene (4.80 g, 16.20 mmol). The reaction was stirred overnight, quenched with ammonium chloride solution (sat.) and extracted several times with ethyl acetate. The organic layer was dried over magnesium sulfate and triturated with ether/hexane to give 2.78 g of 4,4-bis(trifluoromethyl)-1,4-dihydro-2H-3,1-benzoxazin-2-one as a tan solid (60%). 1H NMR (DMSO-d6): δ 11.37 (s, 1H), 7.62 (m, 2H), 7.29 (t, J=7.5 Hz, 1H), 7.11 (dd, J=8.0, 0.8 Hz, 1H). MS (ESI) m/z 284 ([M−H]−); HRMS: calcd for C10H5F6NO2, 285.0224; found (ESI_FT), 286.0299; Anal. Calcd for C10H5F6NO2: C, 42.12; H, 1.77; N, 4.91. Found: C, 42.63; H, 1.79; N, 4.72. quenched with ammonium chloride solution (sat.) extracted several times with ethyl acetate The organic layer was dried over magnesium sulfate triturated with ether/hexane

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a stirred solution of 2-(2-aminophenyl)-1,1,1,3,3,3-hexafluoropropan-2-ol (4.20 g, 16.20 mmol) in THF (160 mL) was added triphosgene (4.80 g, 16.20 mmol). The reaction was stirred overnight, quenched with ammonium chloride solution (sat.) and extracted several times with ethyl acetate. The organic layer was dried over magnesium sulfate and triturated with ether/hexane to give 2.78 g of 4,4-bis(trifluoromethyl)-1,4-dihydro-2H-3,1-benzoxazin-2-one as a tan solid (60%). 1H NMR (DMSO-d6): δ 11.37 (s, 1H), 7.62 (m, 2H), 7.29 (t, J=7.5 Hz, 1H), 7.11 (dd, J=8.0, 0.8 Hz, 1H). MS (ESI) m/z 284 ([M−H]−); HRMS: calcd for C10H5F6NO2, 285.0224; found (ESI_FT), 286.0299; Anal. Calcd for C10H5F6NO2: C, 42.12; H, 1.77; N, 4.91. Found: C, 42.63; H, 1.79; N, 4.72. quenched with ammonium chloride solution (sat.) extracted several times with ethyl acetate The organic layer was dried over magnesium sulfate triturated with ether/hexane

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a stirred solution of 2-(2-aminophenyl)-1,1,1,3,3,3-hexafluoropropan-2-ol (4.20 g, 16.20 mmol) in THF (160 mL) was added triphosgene (4.80 g, 16.20 mmol). The reaction was stirred overnight, quenched with ammonium chloride solution (sat.) and extracted several times with ethyl acetate. The organic layer was dried over magnesium sulfate and triturated with ether/hexane to give 2.78 g of 4,4-bis(trifluoromethyl)-1,4-dihydro-2H-3,1-benzoxazin-2-one as a tan solid (60%). 1H NMR (DMSO-d6): δ 11.37 (s, 1H), 7.62 (m, 2H), 7.29 (t, J=7.5 Hz, 1H), 7.11 (dd, J=8.0, 0.8 Hz, 1H). MS (ESI) m/z 284 ([M−H]−); HRMS: calcd for C10H5F6NO2, 285.0224; found (ESI_FT), 286.0299; Anal. Calcd for C10H5F6NO2: C, 42.12; H, 1.77; N, 4.91. Found: C, 42.63; H, 1.79; N, 4.72. quenched with ammonium chloride solution (sat.) extracted several times with ethyl acetate The organic layer was dried over magnesium sulfate triturated with ether/hexane