6-bromo-4-fluoro-2,3-dihydroinden-1-one

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 6-bromo-4-fluoroindan-1-one (57 mg, 0.26 mmol) in trifluoroacetic acid (1.1 mL) was added triethylsilane (103 μL, 0.65 mmol), and the mixture was stirred at room temperature overnight. The reaction solution was poured into ice water, and the mixture was extracted with ethyl acetate three times. The organic layer was combined, washed with saturated aqueous sodium hydrogen carbonate solution, and the organic layer was filtered through Phase-separator (Varian Inc.), and then concentrated under reduced pressure. The resulting residue was purified by silica gel column chromatography (hexane:ethyl acetate=100:0) to give a crude 6-bromo-4-fluoroindane (61 mg) as a yellow oil. The resultant was used in the next step without further purification. (2) The above crude product was treated in a similar manner to Reference example 41-(1) to give a crude methyl 7-fluoroindane-5-carboxylate. The resultant was used in the next step without further purification. (3) The above crude product was treated in a similar manner to Reference example 43-(2) to give a crude (7-fluoro-2,3-dihydro-1H-inden-5-yl)methanol. The resultant was used in the next step without further purification. the mixture was extracted with ethyl acetate three times washed with saturated aqueous sodium hydrogen carbonate solution the organic layer was filtered through Phase-separator (Varian Inc.) concentrated under reduced pressure The resulting residue was purified by silica gel column chromatography (hexane:ethyl acetate=100:0)

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 6-bromo-4-fluoro-indan-1-one (Enamine, 453 mg), (S)-3-hydroxy-pyrrolidin-2-one (200 mg) and 1,4-dioxane (3 mL) was purged with argon. Cesium carbonate (645 mg), N,N′-dimethyl-ethylene-diamine (2.24 mL) and copper(I) iodide (38 mg) were added and the mixture was heated to 80° C. for 3 hours. After cooling to r.t. the mixture was filtered and the filtrate evaporated. The residue was purified by SGC (eluent: heptane/EA 1:1 with 0 to 20% MeOH) to provide the title compound. MS ESI+: m/z=250 [M+H]+. was purged with argon Cesium carbonate (645 mg), N,N′-dimethyl-ethylene-diamine (2.24 mL) and copper(I) iodide (38 mg) were added After cooling to r.t. the mixture was filtered the filtrate evaporated The residue was purified by SGC (eluent: heptane/EA 1:1 with 0 to 20% MeOH)

Conditions: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: In a further alternative preparation a mixture of (R)-3-((6-ethoxypyridin-3-yl)oxy)pyrrolidin-2-one (2.00 g), 6-bromo-4-fluoro-2,3-dihydro-1H-inden-1-one (2.30 g), N,N′-dimethyl-ethylene-diamine (10 mL) and 1,4-dioxane (20 mL) was purged with argon and cesium carbonate (3.8 g) and copper(I) iodide (100 mg) were added. The mixture was heated to 100° C. for 1.5 hours. After cooling to r.t. the mixture was diluted with EA and washed with water (5 times) and brine. The organic layer was dried (Na2SO4) and concentrated. The residue was purified by SGC (eluent: heptane with 0 to 70% EA) to provide Example 2-08. 1H-NMR (400 MHz, DMSO) δ 7.99 (1H, dd, J=11.3, 1.8 Hz), 7.97 (1H, d, J=3.1 Hz), 7.77 (1H, d, J=1.8 Hz), 7.53 (1H, dd, J=8.9, 3.1 Hz), 6.76 (1H, d, J=8.9 Hz), 5.22 (1H, dd, J=8.3, 8.3 Hz), 4.24 (2H, q, J=7.0 Hz), 3.96 (1H, m), 3.86 (1H, m), 3.11 (2H, m), 2.72 (2H, m), 2.69 (1H, m), 2.13 (1H, m), 1.30 (3H, t, J=7.0 Hz). In a further alternative preparation was purged with argon and cesium carbonate (3.8 g) and copper(I) iodide (100 mg) were added After cooling to r.t. the mixture was diluted with EA washed with water (5 times) and brine The organic layer was dried (Na2SO4) concentrated The residue was purified by SGC (eluent: heptane with 0 to 70% EA) to provide Example 2-08

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of (R)-3-[6-(2-cyclopropyl-methoxy)-pyridin-3-yloxy]-pyrrolidin-2-one (100 mg), 6-bromo-4-fluoro-2,3-dihydro-1H-inden-1-one (92 mg) and 1,4-dioxane (2 mL) was purged with argon. N,N′-Dimethyl-ethylene-diamine (355 mg), cesium carbonate (263 mg) and copper(I) iodide (8 mg) were added. The mixture was heated to 80° C. for 4 hours. After cooling to r.t. the mixture was filtered and the filtrate purified by preparative HPLC to provide Example 1-11. 1H-NMR (400 MHz, DMSO) δ 7.99 (1H, dd, J=11.2, 1.8 Hz), 7.95 (1H, d, J=3.1 Hz), 7.77 (1H, d, J=1.8 Hz), 7.53 (1H, dd, J=9.0, 3.1 Hz), 6.79 (1H, d, J=9.0 Hz), 5.22 (1H, dd, J=8.3, 8.3 Hz), 4.03 (2H, d, J=7.1 Hz), 3.96 (1H, m), 3.86 (1H, m), 3.10 (2H, m), 2.72 (2H, m), 2.68 (1H, m), 2.13 (1H, m), 1.22 (1H, m), 0.54 (2H, m), 0.30 (2H, m). was purged with argon N,N′-Dimethyl-ethylene-diamine (355 mg), cesium carbonate (263 mg) and copper(I) iodide (8 mg) were added After cooling to r.t. the mixture was filtered the filtrate purified by preparative HPLC to provide Example 1-11

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of (R)-3-[6-(2-cyclopropyl-methoxy)-pyridin-3-yloxy]-pyrrolidin-2-one (100 mg), 6-bromo-4-fluoro-2,3-dihydro-1H-inden-1-one (92 mg) and 1,4-dioxane (2 mL) was purged with argon. N,N′-Dimethyl-ethylene-diamine (355 mg), cesium carbonate (263 mg) and copper(I) iodide (8 mg) were added. The mixture was heated to 80° C. for 4 hours. After cooling to r.t. the mixture was filtered and the filtrate purified by preparative HPLC to provide Example 1-11. 1H-NMR (400 MHz, DMSO) δ 7.99 (1H, dd, J=11.2, 1.8 Hz), 7.95 (1H, d, J=3.1 Hz), 7.77 (1H, d, J=1.8 Hz), 7.53 (1H, dd, J=9.0, 3.1 Hz), 6.79 (1H, d, J=9.0 Hz), 5.22 (1H, dd, J=8.3, 8.3 Hz), 4.03 (2H, d, J=7.1 Hz), 3.96 (1H, m), 3.86 (1H, m), 3.10 (2H, m), 2.72 (2H, m), 2.68 (1H, m), 2.13 (1H, m), 1.22 (1H, m), 0.54 (2H, m), 0.30 (2H, m). was purged with argon N,N′-Dimethyl-ethylene-diamine (355 mg), cesium carbonate (263 mg) and copper(I) iodide (8 mg) were added After cooling to r.t. the mixture was filtered the filtrate purified by preparative HPLC to provide Example 1-11

Conditions: temp:85.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of (R)-3-[6-(2-cyclopropyl-ethoxy)-pyridin-3-yloxy]-pyrrolidin-2-one (100 mg), 6-bromo-4-fluoro-2,3-dihydro-1H-inden-1-one (87 mg) and 1,4-dioxane (2 mL) was purged with argon. N,N′-Dimethyl-ethylene-diamine (336 mg), cesium carbonate (248 mg) and copper(I) iodide (7 mg) were added. The mixture was heated to 85° C. for 3 hours. After cooling to r.t. the mixture was filtered and the filtrate purified by preparative HPLC to provide Example 1-08. 1H-NMR (400 MHz, DMSO) 67.99 (1H, dd, J=11.3, 1.8 Hz), 7.97 (1H, d, J=3.1 Hz), 7.77 (1H, d, J=1.8 Hz), 7.53 (1H, dd, J=9.0, 3.1 Hz), 6.77 (1H, d, J=9.0 Hz), 5.22 (1H, dd, J=8.3, 8.3 Hz), 4.24 (2H, t, J=6.8 Hz), 3.96 (1H, m), 3.86 (1H, m), 3.10 (2H, m), 2.72 (2H, m), 2.69 (1H, m), 2.14 (1H, m), 1.60 (2H, dt, J=6.8, 6.8 Hz), 0.80 (1H, m), 0.42 (2H, m), 0.10 (2H, m). was purged with argon N,N′-Dimethyl-ethylene-diamine (336 mg), cesium carbonate (248 mg) and copper(I) iodide (7 mg) were added After cooling to r.t. the mixture was filtered the filtrate purified by preparative HPLC to provide Example 1-08

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 6-bromo-4-fluoroindan-1-one (57 mg, 0.26 mmol) in trifluoroacetic acid (1.1 mL) was added triethylsilane (103 μL, 0.65 mmol), and the mixture was stirred at room temperature overnight. The reaction solution was poured into ice water, and the mixture was extracted with ethyl acetate three times. The organic layer was combined, washed with saturated aqueous sodium hydrogen carbonate solution, and the organic layer was filtered through Phase-separator (Varian Inc.), and then concentrated under reduced pressure. The resulting residue was purified by silica gel column chromatography (hexane:ethyl acetate=100:0) to give a crude 6-bromo-4-fluoroindane (61 mg) as a yellow oil. The resultant was used in the next step without further purification. (2) The above crude product was treated in a similar manner to Reference example 41-(1) to give a crude methyl 7-fluoroindane-5-carboxylate. The resultant was used in the next step without further purification. (3) The above crude product was treated in a similar manner to Reference example 43-(2) to give a crude (7-fluoro-2,3-dihydro-1H-inden-5-yl)methanol. The resultant was used in the next step without further purification. the mixture was extracted with ethyl acetate three times washed with saturated aqueous sodium hydrogen carbonate solution the organic layer was filtered through Phase-separator (Varian Inc.) concentrated under reduced pressure The resulting residue was purified by silica gel column chromatography (hexane:ethyl acetate=100:0)

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 6-bromo-4-fluoro-indan-1-one (Enamine, 453 mg), (S)-3-hydroxy-pyrrolidin-2-one (200 mg) and 1,4-dioxane (3 mL) was purged with argon. Cesium carbonate (645 mg), N,N′-dimethyl-ethylene-diamine (2.24 mL) and copper(I) iodide (38 mg) were added and the mixture was heated to 80° C. for 3 hours. After cooling to r.t. the mixture was filtered and the filtrate evaporated. The residue was purified by SGC (eluent: heptane/EA 1:1 with 0 to 20% MeOH) to provide the title compound. MS ESI+: m/z=250 [M+H]+. was purged with argon Cesium carbonate (645 mg), N,N′-dimethyl-ethylene-diamine (2.24 mL) and copper(I) iodide (38 mg) were added After cooling to r.t. the mixture was filtered the filtrate evaporated The residue was purified by SGC (eluent: heptane/EA 1:1 with 0 to 20% MeOH)

Conditions: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: In a further alternative preparation a mixture of (R)-3-((6-ethoxypyridin-3-yl)oxy)pyrrolidin-2-one (2.00 g), 6-bromo-4-fluoro-2,3-dihydro-1H-inden-1-one (2.30 g), N,N′-dimethyl-ethylene-diamine (10 mL) and 1,4-dioxane (20 mL) was purged with argon and cesium carbonate (3.8 g) and copper(I) iodide (100 mg) were added. The mixture was heated to 100° C. for 1.5 hours. After cooling to r.t. the mixture was diluted with EA and washed with water (5 times) and brine. The organic layer was dried (Na2SO4) and concentrated. The residue was purified by SGC (eluent: heptane with 0 to 70% EA) to provide Example 2-08. 1H-NMR (400 MHz, DMSO) δ 7.99 (1H, dd, J=11.3, 1.8 Hz), 7.97 (1H, d, J=3.1 Hz), 7.77 (1H, d, J=1.8 Hz), 7.53 (1H, dd, J=8.9, 3.1 Hz), 6.76 (1H, d, J=8.9 Hz), 5.22 (1H, dd, J=8.3, 8.3 Hz), 4.24 (2H, q, J=7.0 Hz), 3.96 (1H, m), 3.86 (1H, m), 3.11 (2H, m), 2.72 (2H, m), 2.69 (1H, m), 2.13 (1H, m), 1.30 (3H, t, J=7.0 Hz). In a further alternative preparation was purged with argon and cesium carbonate (3.8 g) and copper(I) iodide (100 mg) were added After cooling to r.t. the mixture was diluted with EA washed with water (5 times) and brine The organic layer was dried (Na2SO4) concentrated The residue was purified by SGC (eluent: heptane with 0 to 70% EA) to provide Example 2-08

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of (R)-3-[6-(2-cyclopropyl-methoxy)-pyridin-3-yloxy]-pyrrolidin-2-one (100 mg), 6-bromo-4-fluoro-2,3-dihydro-1H-inden-1-one (92 mg) and 1,4-dioxane (2 mL) was purged with argon. N,N′-Dimethyl-ethylene-diamine (355 mg), cesium carbonate (263 mg) and copper(I) iodide (8 mg) were added. The mixture was heated to 80° C. for 4 hours. After cooling to r.t. the mixture was filtered and the filtrate purified by preparative HPLC to provide Example 1-11. 1H-NMR (400 MHz, DMSO) δ 7.99 (1H, dd, J=11.2, 1.8 Hz), 7.95 (1H, d, J=3.1 Hz), 7.77 (1H, d, J=1.8 Hz), 7.53 (1H, dd, J=9.0, 3.1 Hz), 6.79 (1H, d, J=9.0 Hz), 5.22 (1H, dd, J=8.3, 8.3 Hz), 4.03 (2H, d, J=7.1 Hz), 3.96 (1H, m), 3.86 (1H, m), 3.10 (2H, m), 2.72 (2H, m), 2.68 (1H, m), 2.13 (1H, m), 1.22 (1H, m), 0.54 (2H, m), 0.30 (2H, m). was purged with argon N,N′-Dimethyl-ethylene-diamine (355 mg), cesium carbonate (263 mg) and copper(I) iodide (8 mg) were added After cooling to r.t. the mixture was filtered the filtrate purified by preparative HPLC to provide Example 1-11

Conditions: temp:85.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of (R)-3-[6-(2-cyclopropyl-ethoxy)-pyridin-3-yloxy]-pyrrolidin-2-one (100 mg), 6-bromo-4-fluoro-2,3-dihydro-1H-inden-1-one (87 mg) and 1,4-dioxane (2 mL) was purged with argon. N,N′-Dimethyl-ethylene-diamine (336 mg), cesium carbonate (248 mg) and copper(I) iodide (7 mg) were added. The mixture was heated to 85° C. for 3 hours. After cooling to r.t. the mixture was filtered and the filtrate purified by preparative HPLC to provide Example 1-08. 1H-NMR (400 MHz, DMSO) 67.99 (1H, dd, J=11.3, 1.8 Hz), 7.97 (1H, d, J=3.1 Hz), 7.77 (1H, d, J=1.8 Hz), 7.53 (1H, dd, J=9.0, 3.1 Hz), 6.77 (1H, d, J=9.0 Hz), 5.22 (1H, dd, J=8.3, 8.3 Hz), 4.24 (2H, t, J=6.8 Hz), 3.96 (1H, m), 3.86 (1H, m), 3.10 (2H, m), 2.72 (2H, m), 2.69 (1H, m), 2.14 (1H, m), 1.60 (2H, dt, J=6.8, 6.8 Hz), 0.80 (1H, m), 0.42 (2H, m), 0.10 (2H, m). was purged with argon N,N′-Dimethyl-ethylene-diamine (336 mg), cesium carbonate (248 mg) and copper(I) iodide (7 mg) were added After cooling to r.t. the mixture was filtered the filtrate purified by preparative HPLC to provide Example 1-08