2-Amino-2-phenylethan-1-ol → (S)-2-(4-Fluorophenyl)-N-methyl-5-(3-(4-phenyl-4,5-dihydrooxazol-2-yl)phenyl)benzofuran-3-carboxamide

HRID 555058Notes

Reaction equation

HRID 555058 reaction equation
[C:1]([C:3]1[CH:4]=[C:5]([C:9]2[CH:10]=[CH:11][C:12]3[O:16][C:15]([C:17]4[CH:22]=[CH:21][C:20]([F:23])=[CH:19][CH:18]=4)=[C:14]([C:24]([NH:26][CH3:27])=[O:25])[C:13]=3[CH:28]=2)[CH:6]=[CH:7][CH:8]=1)#[N:2].N[C@@H:30]([C:33]1[CH:38]=[CH:37][CH:36]=[CH:35][CH:34]=1)[CH2:31][OH:32]>C1(Cl)C=CC=CC=1.[Cl-].[Zn+2].[Cl-]>[F:23][C:20]1[CH:21]=[CH:22][C:17]([C:15]2[O:16][C:12]3[CH:11]=[CH:10][C:9]([C:5]4[CH:6]=[CH:7][CH:8]=[C:3]([C:1]5[O:32][CH2:31][C@H:30]([C:33]6[CH:38]=[CH:37][CH:36]=[CH:35][CH:34]=6)[N:2]=5)[CH:4]=4)=[CH:28][C:13]=3[C:14]=2[C:24]([NH:26][CH3:27])=[O:25])=[CH:18][CH:19]=1

Participants

5

Reactant 2

HCID 1347972-Amino-2-phenylethan-1-olHCID 592751625-(3-cyanophenyl)-2-(4-fluorophenyl)-N-methylbenzofuran-3-carboxamide

Product 1

HCID 59275165(S)-2-(4-Fluorophenyl)-N-methyl-5-(3-(4-phenyl-4,5-dihydrooxazol-2-yl)phenyl)benzofuran-3-carboxamideYield 24.2%

Reagents, catalysts & solvents 2

HCID 3007855ZincchlorideCatalystHCID 7964ChlorobenzeneSolvent

Procedure

Zinc chloride (9 mg, 0.067 mmol) was added to a stirring solution of 5-(3-cyanophenyl)-2-(4-fluorophenyl)-N-methylbenzofuran-3-carboxamide (50 mg, 0.135 mmol) and (S)-2-amino-2-phenylethanol (93 mg, 0.675 mmol) in PhCl (3 mL) rt. It was subjected to two interactions of microwave irradiation at 200° C. for 1 hr. The material was concentrated and purified by preparative reverse phase HPLC on a C18 column using a suitably buffered H2O/CH3CN gradient, and concentrated to give the titled compound (16 mg, 23%). 1H NMR (500 MHz, CD3OD) δ ppm 8.33 (1H, s), 7.94-8.00 (4H, m), 7.91 (1H, d, J=7.94 Hz), 7.64-7.73 (2H, m), 7.61 (1H, t, J=7.78 Hz), 7.32-7.42 (6H, m), 7.26 (2H, t, J=8.55 Hz), 5.45 (1H, t, J=9.16 Hz), 4.94 (1H, t, J=9.31 Hz), 4.36 (1H, t, J=8.24 Hz), 2.97 (3H, s). LC-MS retention time 1.76 min; m/z (MH+): 491. LC data was recorded on a Shimadzu LC-10AS liquid chromatograph equipped with a Waters XBridge 5u C18 4.6×50 mm column using a SPD-10AV UV-Vis detector at a detector wave length of 220 nM. The elution conditions employed a flow rate of 5 ml/min, a gradient of 100% solvent A/0% solvent B to 0% solvent A/100% solvent B, a gradient time of 2 min, a hold time of 1 min, and an analysis time of 3 min where solvent A was 5% acetonitrile/95% H2O/10 mM ammonium acetate and solvent B was 5% H2O/95% acetonitrile/10 mM ammonium acetate. MS data was determined using a MICROMASS® Platform for LC in electrospray mode. Additional HPLC method: Solvent A=5% MeOH/95% H2O/10 mM ammonium bicarbonate, Solvent B=95% MeOH/5% H2O/10 mM ammonium bicarbonate, Start % B=10, Final % B=100, Gradient time=15 min, Stop time=18 min, Flow Rate=1 ml/min. Column: PHENOMENEX® Gemini C-18, 4.6×150 mm, 3 μm, Rt=18.32 min, purity=99%; Column: Waters XBridge phenyl column 4.6×150 mm, 3.5 μm, Rt=18.10 min, purity=99%.

Workup

  1. customIt was subjected to two interactions of microwave irradiation at 200° C. for 1 hr
  2. concentrationThe material was concentrated
  3. custompurified by preparative reverse phase HPLC on a C18 column
  4. concentrationconcentrated

Sources & evidence

ORD record
ord-f6029e4583174794a87bd36358658918
Source dataset
uspto-grants-2011_11
Patent number
US08048887B2

Reaction notes

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