3-bromo-4-(cyclopropylmethoxy)benzaldehyde

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

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

Procedure: To a degassed solution of 3-bromo-4-cyclopropylmethoxybenzaldehyde (1.53 g, 6 mmol), 4-methoxybenzeneboronic acid (1.22 g, 8 mmol) and potassium carbonate (2.74 g, 20 mmol) in toluene/ethanol 2/1 (40 mL), Pd(PPh3)4 (100 mg) was added and the mixture was degassed for further 5 minutes. The mixture was then refluxed for 12 hours. The solid is filtered off, and the solvent partitioned between ethyl acetate and water and extracted. The organic solvent was removed under reduced pressure, dried over sodium sulphate and purified by column chromatography on silica (hexane/ethyl acetate 8/2) to afford 1.52 g of product. the mixture was degassed for further 5 minutes The mixture was then refluxed for 12 hours The solid is filtered off the solvent partitioned between ethyl acetate and water extracted The organic solvent was removed under reduced pressure dried over sodium sulphate purified by column chromatography on silica (hexane/ethyl acetate 8/2)

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

Conditions: temp:60.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A well stirred mixture of commercially available 3-bromo-4-hydroxy-benzaldehyde (40.2 g; 220 mmol), anhydrous K2CO3 (30.4 g; 220 mmol) and commercially available bromomethyl-cyclopropane (32.4 g; 240 mmol) in dry DMF (200 mL) is heated to 60° C. over night. The reaction mixture is filtered, concentrated under reduced pressure, diluted with water and extracted with tert. BuOMe. The combined organic extracts are washed with brine, dried over Mg2SO4 and concentrated under reduced pressure. The residue is chromatographed on silica gel (cyclohexane/AcOEt 100:0 to 85:15) to yield 47.5 g of the title compound as pale yellow oil. The reaction mixture is filtered concentrated under reduced pressure diluted with water extracted with tert The combined organic extracts are washed with brine dried over Mg2SO4 concentrated under reduced pressure The residue is chromatographed on silica gel (cyclohexane/AcOEt 100:0 to 85:15)

Conditions: temp:60.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A well stirred mixture of commercially available 3-bromo-4-hydroxy-benzaldehyde (40.2 g; 220 mmol), anhydrous K2CO3 (30.4 g; 220 mmol) and commercially available bromomethyl-cyclopropane (32.4 g; 240 mmol) in dry DMF (200 mL) is heated to 60° C. over night. The reaction mixture is filtered, concentrated under reduced pressure, diluted with water and extracted with tert. BuOMe. The combined organic extracts are washed with brine, dried over Mg2SO4 and concentrated under reduced pressure. The residue is chromatographed on silica gel (cyclohexane/AcOEt 100:0 to 85:15) to yield 47.5 g of the title compound as pale yellow oil. The reaction mixture is filtered concentrated under reduced pressure diluted with water extracted with tert The combined organic extracts are washed with brine dried over Mg2SO4 concentrated under reduced pressure The residue is chromatographed on silica gel (cyclohexane/AcOEt 100:0 to 85:15)

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

Procedure: To a degassed solution of 3-bromo-4-cyclopropylmethoxybenzaldehyde (1.53 g, 6 mmol), 4-methoxybenzeneboronic acid (1.22 g, 8 mmol) and potassium carbonate (2.74 g, 20 mmol) in toluene/ethanol 2/1 (40 mL), Pd(PPh3)4 (100 mg) was added and the mixture was degassed for further 5 minutes. The mixture was then refluxed for 12 hours. The solid is filtered off, and the solvent partitioned between ethyl acetate and water and extracted. The organic solvent was removed under reduced pressure, dried over sodium sulphate and purified by column chromatography on silica (hexane/ethyl acetate 8/2) to afford 1.52 g of product. the mixture was degassed for further 5 minutes The mixture was then refluxed for 12 hours The solid is filtered off the solvent partitioned between ethyl acetate and water extracted The organic solvent was removed under reduced pressure dried over sodium sulphate purified by column chromatography on silica (hexane/ethyl acetate 8/2)

Conditions: temp:60.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A well stirred mixture of commercially available 3-bromo-4-hydroxy-benzaldehyde (40.2 g; 220 mmol), anhydrous K2CO3 (30.4 g; 220 mmol) and commercially available bromomethyl-cyclopropane (32.4 g; 240 mmol) in dry DMF (200 mL) is heated to 60° C. over night. The reaction mixture is filtered, concentrated under reduced pressure, diluted with water and extracted with tert. BuOMe. The combined organic extracts are washed with brine, dried over Mg2SO4 and concentrated under reduced pressure. The residue is chomatographed on silica gel (cyclohexane/AcOEt 100:0 to 85:15) to yield 47.5 g of the title compound as pale yellow oil. The reaction mixture is filtered concentrated under reduced pressure diluted with water extracted with tert The combined organic extracts are washed with brine dried over Mg2SO4 concentrated under reduced pressure

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

Procedure: To a degassed solution of 3-bromo-4-cyclopropylmethoxybenzaldehyde (1.53 g, 6 mmol), 4-methoxybenzeneboronic acid (1.22 g, 8 mmol) and potassium carbonate (2.74 g, 20 mmol) in toluene/ethanol 2/1 (40 mL), Pd(PPh3)4 (100 mg) was added and the mixture was degassed for further 5 minutes. The mixture was then refluxed for 12 hours. The solid is filtered off, and the solvent partitioned between ethyl acetate and water and extracted. The organic solvent was removed under reduced pressure, dried over sodium sulphate and purified by column chromatography on silica (hexane/ethyl acetate 8/2) to afford 1.52 g of product. the mixture was degassed for further 5 minutes The mixture was then refluxed for 12 hours The solid is filtered off the solvent partitioned between ethyl acetate and water extracted The organic solvent was removed under reduced pressure dried over sodium sulphate purified by column chromatography on silica (hexane/ethyl acetate 8/2)