4-Bromo-1-methoxy-2-(trifluoromethyl)benzene

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: A solution of 3.0 g (11.8 mmol) 4-bromo-1-methoxy-2-trifluoromethyl-benzene in 20 mL 1 M HBr in glacial acetic acid is stirred for 60 h at 90° C. The reaction solution is diluted with 300 mL water, adjusted to pH 7 with K2CO3. The aqueous phase is extracted with EtOAc, the combined organic extracts are with washed 40 mL quarter-saturated NaHCO3 solution and dried over MgSO4. The solvent is eliminated i.vac. and the product is further reacted without any more purification. The aqueous phase is extracted with EtOAc with washed 40 mL quarter-saturated NaHCO3 solution dried over MgSO4 and the product is further reacted without any more purification

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

実験手順: A solution of 3.0 g (11.8 mmol) 4-bromo-1-methoxy-2-trifluoromethyl-benzene in 20 mL 1 M HBr in glacial acetic acid is stirred for 60 h at 90° C. The reaction solution is diluted with 300 mL water, adjusted to pH 7 with K2CO3. The aqueous phase is extracted with EtOAc, the combined organic extracts are with washed 40 mL quarter-saturated NaHCO3 solution and dried over MgSO4. The solvent is eliminated i.vac. and the product is further reacted without any more purification. The aqueous phase is extracted with EtOAc with washed 40 mL quarter-saturated NaHCO3 solution dried over MgSO4 and the product is further reacted without any more purification

反応条件: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: Bis(triphenylphosphine)palladium dichloride (34 mg, 0.05 mmol) was added under a nitrogen atmosphere to a mixture of 4-propyl-6-trimethylstannanyl-pyrimidine-2-carbonitrile (150 mg, 0.48 mmol) and 4-methoxy-3-trifluoromethyl-bromobenzene (148 mg, 0.58 mmol) in dimethylformamide (3 mL). The mixture was heated for 5 hours at 80° C. then concentrated under reduced pressure. The residue was partitioned between ethyl acetate and water. The aqueous layer was extracted twice with ethyl acetate. The combined organic layers were concentrated under reduced pressure. The residue was chromatographed over silica gel (eluent Cyclohexane/DCM 7/3) to afford a solid which was triturated in pentane. After filtration, 4-(4-methoxy-3-trifluoromethyl-phenyl)-6-propyl-pyrimidine-2-carbonitrile (18 mg, 11%) was obtained as an off white solid. then concentrated under reduced pressure The residue was partitioned between ethyl acetate and water The aqueous layer was extracted twice with ethyl acetate The combined organic layers were concentrated under reduced pressure The residue was chromatographed over silica gel (eluent Cyclohexane/DCM 7/3) to afford a solid which was triturated in pentane After filtration

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

実験手順: A solution of 3.0 g (11.8 mmol) 4-bromo-1-methoxy-2-trifluoromethyl-benzene in 20 mL 1 M HBr in glacial acetic acid is stirred for 60 h at 90° C. The reaction solution is diluted with 300 mL water, adjusted to pH 7 with K2CO3. The aqueous phase is extracted with EtOAc, the combined organic extracts are with washed 40 mL quarter-saturated NaHCO3 solution and dried over MgSO4. The solvent is eliminated i.vac. and the product is further reacted without any more purification. The aqueous phase is extracted with EtOAc with washed 40 mL quarter-saturated NaHCO3 solution dried over MgSO4 and the product is further reacted without any more purification

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: A solution of 3.0 g (11.8 mmol) 4-bromo-1-methoxy-2-trifluoromethyl-benzene in 20 mL 1 M HBr in glacial acetic acid is stirred for 60 h at 90° C. The reaction solution is diluted with 300 mL water, adjusted to pH 7 with K2CO3. The aqueous phase is extracted with EtOAc, the combined organic extracts are with washed 40 mL quarter-saturated NaHCO3 solution and dried over MgSO4. The solvent is eliminated i.vac. and the product is further reacted without any more purification. The aqueous phase is extracted with EtOAc with washed 40 mL quarter-saturated NaHCO3 solution dried over MgSO4 and the product is further reacted without any more purification

反応条件: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a suspension of magnesium turnings (565 mg, 23.5 mmol, 1.2 eq) in 5 mL of dry tetrahydrofuran, 0.1 mL of 1,2-dibromoethane were added followed by 5 mL of a tetrahydrofuran solution of 5-bromo-2-methoxy-benzotrifluoride (5.0 g, 19.6 mmol, 1.0 eq in 30 mL tetrahydrofuran). The resulting mixture was gently heated to initiate the reaction. The remaining solution of bromide was added dropwise at such a rate that the reaction could reflux without external heating. After the addition the reaction mixture was heated at reflux for further 2 hours. The mixture was cooled to 0° C. and a solution of 3-bromoacetophenone (3.9 g, 19.6 mmol, 1.0 eq) in tetrahydrofuran (30 mL) was added dropwise. After 2 hours LC-MS showed complete conversion to the desired product. 50 mL of water were added followed by 25 mL of 1 M aqueous HCl. The organic fraction was washed with brine, dried over sodium sulfate and concentrated to give a yellow oil. The oil was dissolved in toluene (50 mL) and a few crystals of p-toluenesulfonic acid were added. The solution was heated to reflux for 2 hours in a flask equipped with a Dean-Stark apparatus. After this time, the mixture was cooled to room temperature, concentrated and the crude purified by flash chromatography eluting with cyclohexane/ethyl acetate (100:0 to 95:5). 5.1 g of clean product was obtained as colorless liquid (yield: 73%). were added The resulting mixture was gently heated the reaction that the reaction could reflux without external heating After the addition the reaction mixture was heated at reflux for further 2 hours

反応条件: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: Bis(triphenylphosphine)palladium dichloride (34 mg, 0.05 mmol) was added under a nitrogen atmosphere to a mixture of 4-propyl-6-trimethylstannanyl-pyrimidine-2-carbonitrile (150 mg, 0.48 mmol) and 4-methoxy-3-trifluoromethyl-bromobenzene (148 mg, 0.58 mmol) in dimethylformamide (3 mL). The mixture was heated for 5 hours at 80° C. then concentrated under reduced pressure. The residue was partitioned between ethyl acetate and water. The aqueous layer was extracted twice with ethyl acetate. The combined organic layers were concentrated under reduced pressure. The residue was chromatographed over silica gel (eluent Cyclohexane/DCM 7/3) to afford a solid which was triturated in pentane. After filtration, 4-(4-methoxy-3-trifluoromethyl-phenyl)-6-propyl-pyrimidine-2-carbonitrile (18 mg, 11%) was obtained as an off white solid. then concentrated under reduced pressure The residue was partitioned between ethyl acetate and water The aqueous layer was extracted twice with ethyl acetate The combined organic layers were concentrated under reduced pressure The residue was chromatographed over silica gel (eluent Cyclohexane/DCM 7/3) to afford a solid which was triturated in pentane After filtration

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

実験手順: A solution of 3.0 g (11.8 mmol) 4-bromo-1-methoxy-2-trifluoromethyl-benzene in 20 mL 1 M HBr in glacial acetic acid is stirred for 60 h at 90° C. The reaction solution is diluted with 300 mL water, adjusted to pH 7 with K2CO3. The aqueous phase is extracted with EtOAc, the combined organic extracts are with washed 40 mL quarter-saturated NaHCO3 solution and dried over MgSO4. The solvent is eliminated i.vac. and the product is further reacted without any more purification. The aqueous phase is extracted with EtOAc with washed 40 mL quarter-saturated NaHCO3 solution dried over MgSO4 and the product is further reacted without any more purification

反応条件: temp:0.00; pressure:0.00; stir: