3-bromopropyl acetate

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

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

Procedure: Acetic acid 3-bromo-propyl ester (6.7 g, 37 mmol) was suspended in water (50 mL) and tert-butanol (20 mL). To the resulting mixture was then added sodium azide (2.76 g, 42.6 mmol) and the reaction mixture was heated to reflux for 18 hours, then concentrated to half of its volume. The reaction mixture was partitioned with water and ethyl acetate. The organic layer was washed with water, dried with Na2SO4, filtered and the solvent evaporated in vacuo to yield the acetic acid 3-azido-propyl ester (3.16 g) as an oil which used in the next step without further purification. to reflux for 18 hours concentrated to half of its volume The reaction mixture was partitioned with water and ethyl acetate The organic layer was washed with water dried with Na2SO4 filtered the solvent evaporated in vacuo

Conditions: temp:50.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a stirred 0° C. DMF (400 mL) suspension of NaH (60% in mineral oil, 0.705 moles, 28.2 g, 1.5 eq.) in a three-neck flask fitted with a reflux condenser and an addition funnel was added a DMF (150 mL) solution of indole (55 g, 0.47 moles) dropwise. After 30-60 minutes, a DMF (50 mL) solution of the alkyl halide, 3-bromopropyl acetate (170 g, 0.94 moles) was added. The reaction was heated at 50° C. for 6 hours and then allowed to stir at room temperature for 5-15 hours. To a stirred 0° C fitted with a reflux condenser and an addition funnel

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

Procedure: A solution of 3-indolylacetonitrile (3.00 g, 19.2 mmol) in DMF (30 mL) was added dropwise to a suspension of sodium hydride (1.08 g, 27.0 mmol) in DMF (10 mL) at room temperature. The resultant mixture was stirred at room temperature for 30 min. before a solution of 3-bromopropylacetate (4.87 g, 26.9 mmol) in DMF (15 mL) was added. The reaction was stirred an additional 3 hours at room temperature before being worked up extractively with EtOAc (250 mL), aqueous 0.5N HCl (200 mL), water (200 mL) and brine (50 mL) and the solvent was removed in vacuo to give 6.91 g (>100%) of crude alkylated product which was converted to 1-(1-hydroxypropyl)-indole-3-acetamide without purification as follows. The oil was dissolved in tert-butanol (70 mL), treated with freshly powdered potassium hydroxide (85%, 12.7 g, 192 mmol) and the resultant mixture heated to a gentle reflux for 1 hr. The reaction mixture was then poured into ice and the acidity adjusted to pH~1 using aqueous 6N HCl (35 mL). The reaction was worked up extractively using EtOAc (300 mL), water (200 mL), brine (50 ml) and the organic layer dried (MgSO4) and the solvent removed in vacuo to give a solid that was purified by flash chromatography using a 2:1 acetone:hexanes initially followed by 95:5 acetone:MeOH to give 2.73 g (61%) of 1-(1-Hydroxypropyl)-indole-3-acetamide. NMR. MS (FD) m/z=232 (M+, 100%). Analytical calculated for C13H16N2O2C, 67.22; H, 6.94; N, 12.06. Found C, 65.99; H, 7.24; N, 11.0. was added the solvent was removed in vacuo to give 6.91 g (>100%) of crude alkylated product which was converted to 1-(1-hydroxypropyl)-indole-3-acetamide without purification The oil was dissolved in tert-butanol (70 mL) a gentle reflux for 1 hr The reaction mixture was then poured into ice the organic layer dried (MgSO4) the solvent removed in vacuo to give a solid that was purified by flash chromatography

Conditions: temp:30.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a suspension of 2-butoxy-8-methoxy-9H-purin-6-amine trifluoroacetate (described in EP 1 728 793, Example 2-1, step (vi)) (20.0 g, 56.9 mmol) in NMP (111 g) was added water (1.7 g) and K2CO3 (23.61 g, 170.8 mmol). To the mixture 1-acetoxy-3-bromopropane (12.4 g, 68.3 mmol) was added and the mixture stirred at 30° C. for 3 hr. To the solution was added MeOH (79 g) and 2% aqueous NaOH (100 g) and stirred at 70° C. for 3 hr. After adding water (200 g) and cooling to 7° C., the suspension was filtered and the collected solid dried to give the subtitle compound as white solid. Yield 13.0 g, 78%; 1H NMR (DMSO-d6) δ 6.77 (bs, 2H), 4.57 (t, 1H), 4.16 (t, 2H), 4.04 (s, 3H), 3.89 (t, 2H), 3.42-3.38 (m, 2H), 1.85-1.78 (m, 2H), 1.68-1.61 (m, 2H), 1.41-1.35 (m, 2H), 0.92 (t, 3H) stirred at 70° C. for 3 hr cooling to 7° C. the suspension was filtered the collected solid dried

Conditions: temp:50.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a stirred 0° C. DMF (400 mL) suspension of NaH (60% in mineral oil, 0.705 moles, 28.2 g, 1.5 eq.) in a three-neck flask fitted with a reflux condenser and an addition funnel was added a DMF (150 mL) solution of indole (55 g, 0.47 moles) dropwise. After 30-60 minutes, a DMF (50 mL) solution of the alkyl halide, 3-bromopropyl acetate (170 g, 0.94 moles) was added. The reaction was heated at 50° C. for 6 hours and then allowed to stir at room temperature for 5-15 hours. To a stirred 0° C fitted with a reflux condenser and an addition funnel

Conditions: temp:50.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a stirred 0° C. DMF (400 mL) suspension of NaH (60% in mineral oil, 0.705 moles, 28.2 g, 1.5 eq.) in a three-neck flask fitted with a reflux condenser and an addition funnel was added a DMF (150 mL) solution of indole (55 g, 0.47 moles) dropwise. After 30-60 minutes, a DMF (50 mL) solution of the alkyl halide, 3-bromopropyl acetate (170 g, 0.94 moles) was added. The reaction was heated at 50° C. for 6 hours and then allowed to stir at room temperature for 5-15 hours. To a stirred 0° C fitted with a reflux condenser and an addition funnel

Conditions: temp:50.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a stirred 0° C. DMF (400 mL) suspension of NaH (60% in mineral oil, 0.705 moles, 28.2 g, 1.5 eq.) in a three-neck flask fitted with a reflux condenser and an addition funnel was added a DMF (150 mL) solution of indole (55 g, 0.47 moles) dropwise. After 30-60 minutes, a DMF (50 mL) solution of the alkyl halide, 3-bromopropyl acetate (170 g, 0.94 moles) was added. The reaction was heated at 50° C. for 6 hours and then allowed to stir at room temperature for 5-15 hours. To a stirred 0° C fitted with a reflux condenser and an addition funnel

Conditions: temp:50.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a stirred 0° C. DMF (400 mL) suspension of NaH (60% in mineral oil, 0.705 moles, 28.2 g, 1.5 eq.) in a three-neck flask fitted with a reflux condenser and an addition funnel was added a DMF (150 mL) solution of indole (55 g, 0.47 moles) dropwise. After 30-60 minutes, a DMF (50 mL) solution of the alkyl halide, 3-bromopropyl acetate (170 g, 0.94 moles) was added. The reaction was heated at 50° C. for 6 hours and then allowed to stir at room temperature for 5-15 hours. To a stirred 0° C fitted with a reflux condenser and an addition funnel

Conditions: temp:50.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a stirred 0° C. DMF (400 mL) suspension of NaH (60% in mineral oil, 0.705 moles, 28.2 g, 1.5 eq.) in a three-neck flask fitted with a reflux condenser and an addition funnel was added a DMF (150 mL) solution of indole (55 g, 0.47 moles) dropwise. After 30-60 minutes, a DMF (50 mL) solution of the alkyl halide, 3-bromopropyl acetate (170 g, 0.94 moles) was added. The reaction was heated at 50° C. for 6 hours and then allowed to stir at room temperature for 5-15 hours. To a stirred 0° C fitted with a reflux condenser and an addition funnel

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

Procedure: In a nitrogen atmosphere, a mixture of 118 g of benzimidazole, 181 g of 3-bromopropyl acetate, 111 g of triethylamine, 2 g of sodium iodide, and 500 g of N,N-dimethylformamide was heated and stirred at 80° C. for 16 hours. The reaction mixture was subjected to conventional aqueous work-up and then purified by column chromatography, obtaining 3-(1H-benzimidazol-1-yl)propyl acetate (yield 70%). was heated purified by column chromatography