2,4'-二溴苯丙酮

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: In analogy to examples 26.1–26.3, 3-mercaptoanisole and 2,4′-dibromopropiophenone were converted to yield 3-(4-bromo-phenyl)-2-methyl-benzo[b]thiophen-6-ol as colorless amorphous solid, MS: 318 (M, 1Br).

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: In analogy to examples 26.1-26.3, 3-mercaptoanisole and 2,4′-dibromopropiophenone were converted to yield 3-(4-bromo-phenyl)-2-methyl-benzo[b]thiophen-6-ol as colorless amorphous solid, MS: 318 (M, 1Br).

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: In analogy to examples 26.1-26.3, 3-mercaptoanisole and 2,4′-dibromopropiophenone were converted to yield 3-(4-bromo-phenyl)-2-methyl-benzo[b]thiophen-6-ol as colorless amorphous solid, MS: 318 (M, 1Br).

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Dissolving 4.3 g (16 mmol) of 2,4′-dibromopropiophenon obtained and 1.4 g (15 mmol) of 2-aminopyridine into 50 milliliter of ethanol, adding 1.9 g of sodium hydrogen carbonate, the resultant suspension was refluxed under heating for 6 hours. After completion of the reaction, adding water and an extraction was carried out using dichloro-methane. Washing the organic layer with water, it was dried with the use of sodium sulfate. The solvent was removed by distillation and the resultant syrup was refined by silica gel column chromatography thereby obtaining 1.6 g of 2-(4-bromo-phenyl)-3-methyl-imidazo [1,2-a] pyridine (yield: 37%). obtained under heating for 6 hours After completion of the reaction an extraction Washing the organic layer with water, it was dried with the use of sodium sulfate The solvent was removed by distillation

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Dissolving 4.3 g (16 mmol) of 2,4′-dibromopropiophenon obtained and 1.4 g (15 mmol) of 2-aminopyridine into 50 milliliter of ethanol, adding 1.9 g of sodium hydrogen carbonate, the resultant suspension was refluxed under heating for 6 hours. After completion of the reaction, adding water and an extraction was carried out using dichloro-methane. Washing the organic layer with water, it was dried with the use of sodium sulfate. The solvent was removed by distillation and the resultant syrup was refined by silica gel column chromatography thereby obtaining 1.6 g of 2-(4-bromo-phenyl)-3-methyl-imidazo [1,2-a] pyridine (yield: 37%). obtained under heating for 6 hours After completion of the reaction an extraction Washing the organic layer with water, it was dried with the use of sodium sulfate The solvent was removed by distillation

反应条件: temp:10.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Dissolving 5.0 g (23 mmol) of 4′-bromopropiophenon into 50 milliliter of acetic acid, and adding 3.7 g (23 mmol) of bromine while cooling with ice, stirred at the temperature of 10° C. for 3 hours. After the color of bromine disappeared, adding water and an extraction was carried out using dichloro-methane. Washing the organic layer with water, it was dried with the use of sodium sulfate. The solvent was removed by distillation and the resultant crystals were washed with hexane thereby obtaining 4.3 g of 2,4′-dibromopropiophenon (yield: 63%). while cooling with ice an extraction Washing the organic layer with water, it was dried with the use of sodium sulfate The solvent was removed by distillation the resultant crystals were washed with hexane

反应条件: temp:10.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Dissolving 5.0 g (23 mmol) of 4′-bromopropiophenon into 50 milliliter of acetic acid, and adding 3.7 g (23 mmol) of bromine while cooling with ice, stirred at the temperature of 10° C. for 3 hours. After the color of bromine disappeared, adding water and an extraction was carried out using dichloro-methane. Washing the organic layer with water, it was dried with the use of sodium sulfate. The solvent was removed by distillation and the resultant crystals were washed with hexane thereby obtaining 4.3 g of 2,4′-dibromopropiophenon (yield: 63%). while cooling with ice an extraction Washing the organic layer with water, it was dried with the use of sodium sulfate The solvent was removed by distillation the resultant crystals were washed with hexane

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Under ice-cooling, sodium ethoxide (1.4 g, 20 mmol) was added to a suspension of malonamamidine hydrochloride (2.8 g, 20 mmol) in dehydrated ethanol (80 mL), and the mixture was stirred for 30 minutes. Moreover, 2,4′-dibromopropiophenone (2.9 g, 10 mmol) was added thereto, and the whole was stirred overnight at room temperature. After the reaction mixture was concentrated in vacuo, the residue was purified by silica gel column chromatography to give the title reference compound (0.12 g) as a white solid (Yield 4%). Under ice-cooling the whole was stirred overnight at room temperature After the reaction mixture was concentrated in vacuo the residue was purified by silica gel column chromatography

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: In analogy to examples 26.1-26.3, 3-mercaptoanisole and 2,4′-dibromopropiophenone were converted to yield 3-(4-bromo-phenyl)-2-methyl-benzo[b]thiophen-6-ol as colorless amorphous solid, MS: 318 (M, 1Br).

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: In analogy to examples 26.1-26.3, 3-mercaptoanisole and 2,4′-dibromopropiophenone were converted to yield 3-(4-bromo-phenyl)-2-methyl-benzo[b]thiophen-6-ol as colorless amorphous solid, MS: 318 (M, 1Br).

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: In analogy to examples 26.1–26.3, 3-mercaptoanisole and 2,4′-dibromopropiophenone were converted to yield 3-(4-bromo-phenyl)-2-methyl-benzo[b]thiophen-6-ol as colorless amorphous solid, MS: 318 (M, 1Br).

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: In analogy to examples 26.1–26.3, 3-mercaptoanisole and 2,4′-dibromopropiophenone were converted to yield 3-(4-bromo-phenyl)-2-methyl-benzo[b]thiophen-6-ol as colorless amorphous solid, MS: 318 (M, 1Br).