Reaktion #164088

Reaktionsgleichung

sodium carbonate

4-(5-allyl-6,7,8,9-tetrahydro-5H-imidazo[1,5-a]azepin-5-yl)-3-bromobenzonitrile

4-fluorophenylboronic acid

→

3′-Methylene-2′,3′,6,7,8,9-hexahydrospiro[imidazo[1,5-a]azepine-5,1′-indene]-5′-carbonitrile

Lösungsmittel

DME

Reaktionsbedingungen

Aufarbeitung

1. 1
   workup.ADDITIONis added
2. 2
   Sonstigethe vessel sealed
3. 3
   Temperaturto cool
4. 4
   ExtraktionThe mixture is extracted with ethyl acetate
5. 5
   Waschenwashed with saturated aqueous sodium bicarbonate
6. 6
   EinengenThe separated organic layer is concentrated in vacuo
7. 7
   Sonstigeis subjected to two sequential chromatography procedures (1: Silica gel, 1:50 to 1:25 methanol:methylene chloride. 2: Reverse phase HPLC, gradient 10-95% % Acetonitrile:Water, pH2, over 8 minutes)
8. 8
   Sonstigeto give the product

Vorschrift

To 4-(5-allyl-6,7,8,9-tetrahydro-5H-imidazo[1,5-a]azepin-5-yl)-3-bromobenzonitrile (0.275 g, 0.76 mmol) is added DME (3.0 mL). To this solution is added aqueous 2M sodium carbonate (1.5 ml, 3.0 mmol) followed by 4-fluorophenylboronic acid (0.269 g, 1.92 mmol). This mixture is transferred to a microwave safe vial Tetrakis(triphenylphosphine) palladium(0) (0.04 g, 0.034 mmol) is added, and the vessel sealed. The mixture is stirred briefly (30 seconds) and place in a microwave for 25 minutes at 130° C. The vial is allowed to cool and unsealed. The mixture is extracted with ethyl acetate and washed with saturated aqueous sodium bicarbonate. The separated organic layer is concentrated in vacuo. The resulting material is subjected to two sequential chromatography procedures (1: Silica gel, 1:50 to 1:25 methanol:methylene chloride. 2: Reverse phase HPLC, gradient 10-95% % Acetonitrile:Water, pH2, over 8 minutes) to give the product. MS (ESI) m/z 276 (M+11); 1H NMR (400 MHz, CDCl3) δ ppm 1.47-1.61 (m, 1H), 1.85-1.99 (m, 1H), 2.01-2.16 (m, 3H), 2.25-2.36 (m, 1H), 2.63 (t, 1H), 2.99 (d, J=16.4 Hz, 1H), 3.10 (dd, J=15.5, 5.7 Hz, 1H), 3.23-3.32 (m, 1H), 5.21-5.25 (m, 1H), 5.62-5.67 (m, 1H), 6.50 (s, 1H), 6.78 (s, 1H), 7.54-7.58 (m, 1H), 7.66-7.70 (m, 1H), 7.88 (s, 1H).

Quelle