Reaktion #165733

Reaktionsgleichung

solution

2-bromo-N-[(2Z)-5-tert-butyl-3-[(2R)-tetrahydrofuran-2-ylmethyl]-1,3-thiazol-2(3H)-ylidene]-5-(trifluoromethyl)benzamide

triethylamine

methylvinylsulfone

tri(o-tolyl)phosphine

→

title compound

Ausbeute 47.0%

N-[(2Z)-5-tert-butyl-3-[(2R)-tetrahydrofuran-2-ylmethyl]-1,3-thiazol-2(3H)-ylidene]-2-[(E)-2-(methylsulfonyl)vinyl]-5-(trifluoromethyl)benzamide

Ausbeute 47.0%

Lösungsmittel

acetonitrile

Reaktionsbedingungen

Aufarbeitung

1. 1
   TemperaturThe reaction was heated another 30 min at 180° C
2. 2
   TemperaturThe reaction mixture was cooled to room temperature
3. 3
   Filtrationfiltered
4. 4
   SonstigeThe residue was purified by preparative HPLC on a Phenomenex Luna Combi-HTS C8(2) column (5 μm, 100 Å, 2.1 mm×30 mm)

Vorschrift

To a solution of Example 386B (172 mg, 0.350 mmol), triethylamine (53 mg, 0.525 mmol) and methylvinylsulfone (55.7 mg, 0.525 mmol) in acetonitrile (1 mL) was added palladium acetate (4.72 mg, 0.021 mmol) and tri(o-tolyl)phosphine (23.44 mg, 0.077 mmol). This mixture was heated in a microwave at 140° C. for 30 min. The reaction was heated another 30 min at 180° C. The reaction mixture was cooled to room temperature and filtered. The residue was purified by preparative HPLC on a Phenomenex Luna Combi-HTS C8(2) column (5 μm, 100 Å, 2.1 mm×30 mm), using a gradient of 10-100% acetonitrile (A) and 10 mM ammonium acetate in water (B), at a flow rate of 2.0 mL/min (0-0.1 min 10% A, 0.1-2.6 min 10-100% A, 2.6-2.9 min 100% A, 2.9-3.0 min 100-10% A. 0.5 min post-run delay) to provide the title compound (85 mg, 47%). 1H NMR (300 MHz, CDCl3) δ ppm 1.38 (s, 9H) 1.62-1.71 (m, 1H) 1.76-1.92 (m, 2H) 2.02-2.14 (m, 1H) 3.08 (s, 3H) 3.73-3.87 (m, 2H) 4.22-4.34 (m, 2H) 4.50 (d, J=11.10 Hz, 1H) 6.80 (d, J=15.47 Hz, 1H) 6.97 (s, 1H) 7.59-7.72 (m, 2H) 8.52 (s, 1H) 8.83 (d, J=15.47 Hz, 1H); MS (DCI/NH3) m/z 517 (M+H)+.

Quelle