7-BROMO-4-METHOXYINDOLE

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: Prepared according to a procedure analogous to that described for 7-chloro-2-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-1H-indole using 7-bromo-4-methoxy-1H-indole. Prepared

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: Prepared according to a procedure analogous to that described for 7-chloro-2-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-1H-indole using 7-bromo-4-methoxy-1H-indole. Prepared

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a suspension of sodium hydride (60%, 0.23 g, 5.75 mmol) in DMF (18 mL) was added a solution of 4-methoxyl-7-bromoindole (1.1 g, 4.87 mmol) in DMF (2 mL). After 1 h at room temperature, the mixture was treated with methyl iodide (0.45 mL, 7.23 mmol) with cooling in an ice-water bath. The reaction mixture was allowed to warm up room temperature and stirred overnight. The reaction was quenched with water, extracted with ethyl acetate and the extract washed with water and brine, and dried (sodium sulfate). Evaporation of solvent gave a crude product, which was used without further purification. 1H NMR (400 MHz, CDCl3) 3.92(σ,3H), 4.13 (s, 3H), 6.35 (d, J=8.21 Hz, 1H), 6.55 (d, J=3.13 Hz, 1H), 6.89 (d, J=3.52 Hz, 1H), 7.22 (d, J=8.21 Hz, 1H). with cooling in an ice-water bath The reaction was quenched with water extracted with ethyl acetate the extract washed with water and brine dried (sodium sulfate) Evaporation of solvent

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: 2-Bromo-5-methoxy-aniline (4.4 g, 21.8 mmol) was added dropwise to a solution of boron trichloride in methylene chloride (1.0 M, 24 mL, 24 mmol) cooled with ice water. The reaction mixture was warmed to room temperature, stirred for 30 min, and chloroacetonitrile (4.01 mL, 26.2 mmol) and aluminum chloride (4.01 g, 24.0 mmol) were added, followed by 1,2-dichloroethane (28.5 mL). The reaction mixture was heated to 70° C. to distill off methylene chloride, and then heated to reflux for 24 hrs. After cooling to 0–5° C., the mixture was treated with 2.5 M HCl (38.4 mL) carefully, and then heated to 80° C. for 1 h until all solids dissolved. The aqueous layer was separated, extracted with methylene chloride and the combined extracts washed with water and brine, dried (sodium sulfate) and evaporated to a yellow solid, which was used without further purification. The crude product was taken into dioxane (37 mL) and water (4.2 mL), and treated with sodium borohydride (0.91 g, 24.0 mmol) in portions. After stirring at room temperature for 30 min, all the starting material was consumed and the reaction mixture was then heated to reflux for 14 hrs. After cooling to room temperature, the mixture was treated with concentrated HCl, and extracted with ethyl acetate. The organic extract was washed with water and brine; dried (sodium sulfate), and concentrated. Column chromatography on silica gel (hexanes/ethyl acetate) gave 4-methoxyl-7-bromoindole (1.2 g, 24%). 1H NMR (400 MHz, CDCl3) 3.94 (s, 3H), 6.44 (d, J=8.21 Hz, 1H), 6.73 (m, 1H), 7.17 (t, J=2.74 Hz, 1H), 7.22˜7.26 (m, 1H), 8.32 (br, 1H); MS (ES, m/z): C9H8BrNO: 227.99 (M+(79Br)+1), 230.0(M+(81Br)+1). The reaction mixture was heated to 70° C. to distill off methylene chloride heated to reflux for 24 hrs After cooling to 0–5° C. the mixture was treated with 2.5 M HCl (38.4 mL) carefully heated to 80° C. for 1 h until all solids dissolved The aqueous layer was separated extracted with methylene chloride the combined extracts washed with water and brine dried (sodium sulfate) evaporated to a yellow solid, which was used without further purification After stirring at room temperature for 30 min all the starting material was consumed the reaction mixture was then heated to reflux for 14 hrs After cooling to room temperature the mixture was treated with concentrated HCl extracted with ethyl acetate The organic extract was washed with water and brine dried (sodium sulfate) concentrated

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: Prepared according to a procedure analogous to that described for 7-chloro-2-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-1H-indole using 7-bromo-4-methoxy-1H-indole. Prepared