3-methylbutylthiourea

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

Procedure: A solution of N-(3-methylbutyl)thiourea (3.00 g, 20.5 mmol), 2-bromo-1-[4-(trifluoromethyl)phenyl]ethanone (5.45 g, 20.5 mmol) and sodium acetate (2.19 g, 26.7 mmol) in ethanol (50 mL) was stirred at 90° C. for 4 hr. The reaction mixture was poured into water and extracted with ethyl acetate. The extract was dried over anhydrous sodium sulfate and concentrated under reduced pressure. The obtained solid was recrystallized from dichloromethane-hexane to give the title compound (1.76 g, yield 74%) as pale-yellow crystals. extracted with ethyl acetate The extract was dried over anhydrous sodium sulfate concentrated under reduced pressure The obtained solid was recrystallized from dichloromethane-hexane

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

Procedure: A solution of N-(3-methylbutyl)thiourea (3.00 g, 20.5 mmol), 2-bromo-1-[4-(trifluoromethyl)phenyl]ethanone (5.45 g, 20.5 mmol), sodium acetate (2.19 g, 26.7 mmol) in ethanol (50 mL) was stirred at 90° C. for 4 hr. The reaction mixture was poured into water, and the mixture was extracted with ethyl acetate. The extract was dried over anhydrous sodium sulfate, and concentrated under reduced pressure. The obtained solid was recrystallized from dichloromethane-hexane to give the title compound (1.76 g, yield 27%) as pale-yellow crystals. the mixture was extracted with ethyl acetate The extract was dried over anhydrous sodium sulfate concentrated under reduced pressure The obtained solid was recrystallized from dichloromethane-hexane

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

Procedure: A solution of N-(3-methylbutyl)thiourea (3.00 g, 20.5 mmol), 2-bromo-1-[4-(trifluoromethyl)phenyl]ethanone (5.45 g, 20.5 mmol), sodium acetate (2.19 g, 26.7 mmol) in ethanol (50 mL) was stirred at 90° C. for 4 hr. The reaction mixture was poured into water, and the mixture was extracted with ethyl acetate. The extract was dried over anhydrous sodium sulfate, and concentrated under reduced pressure. The obtained solid was recrystallized from dichloromethane-hexane to give the title compound (1.76 g, yield 27%) as pale-yellow crystals. the mixture was extracted with ethyl acetate The extract was dried over anhydrous sodium sulfate concentrated under reduced pressure The obtained solid was recrystallized from dichloromethane-hexane

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

Procedure: A solution of 3-methyl-2-butanone (2.64 g) in methanol (30 ml) was cooled to −30° C. bromine (4.8 g) was added, and heated to room temperature with stirring. To the obtained colorless solution were added N-(3-methylbutyl)thiourea (2.92 g) and sodium acetate (2.40 g) and the mixture was stirred with heating under reflux for 2 hrs. The reaction mixture was concentrated, diluted with ethyl acetate and washed with water. The ethyl acetate layer was concentrated, and the residue was purified by silica gel column chromatography with ethyl acetate-hexane (gradient of 1:9 to 2:1 by volume ratio) to give the title compound (0.90 g, yield 21%) as a yellow oil. was added the mixture was stirred with heating under reflux for 2 hrs The reaction mixture was concentrated diluted with ethyl acetate washed with water The ethyl acetate layer was concentrated the residue was purified by silica gel column chromatography with ethyl acetate-hexane (gradient of 1:9 to 2:1 by volume ratio)

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

Procedure: A solution of 3-methyl-2-butanone (2.64 g) in methanol (30 ml) was cooled to −30° C. bromine (4.8 g) was added, and heated to room temperature with stirring. To the obtained colorless solution were added N-(3-methylbutyl)thiourea (2.92 g) and sodium acetate (2.40 g) and the mixture was stirred with heating under reflux for 2 hrs. The reaction mixture was concentrated, diluted with ethyl acetate and washed with water. The ethyl acetate layer was concentrated, and the residue was purified by silica gel column chromatography with ethyl acetate-hexane (gradient of 1:9 to 2:1 by volume ratio) to give the title compound (0.90 g, yield 21%) as a yellow oil. was added the mixture was stirred with heating under reflux for 2 hrs The reaction mixture was concentrated diluted with ethyl acetate washed with water The ethyl acetate layer was concentrated the residue was purified by silica gel column chromatography with ethyl acetate-hexane (gradient of 1:9 to 2:1 by volume ratio)

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

Procedure: A solution of 3-methyl-2-butanone (2.64 g) in methanol (30 ml) was cooled to −30° C. bromine (4.8 g) was added, and heated to room temperature with stirring. To the obtained colorless solution were added N-(3-methylbutyl)thiourea (2.92 g) and sodium acetate (2.40 g) and the mixture was stirred with heating under reflux for 2 hrs. The reaction mixture was concentrated, diluted with ethyl acetate and washed with water. The ethyl acetate layer was concentrated, and the residue was purified by silica gel column chromatography with ethyl acetate-hexane (gradient of 1:9 to 2:1 by volume ratio) to give the title compound (0.90 g, yield 21%) as a yellow oil. was added the mixture was stirred with heating under reflux for 2 hrs The reaction mixture was concentrated diluted with ethyl acetate washed with water The ethyl acetate layer was concentrated the residue was purified by silica gel column chromatography with ethyl acetate-hexane (gradient of 1:9 to 2:1 by volume ratio)

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

Procedure: A solution of N-(3-methylbutyl)thiourea (3.00 g, 20.5 mmol), 2-bromo-1-[4-(trifluoromethyl)phenyl]ethanone (5.45 g, 20.5 mmol) and sodium acetate (2.19 g, 26.7 mmol) in ethanol (50 mL) was stirred at 90° C. for 4 hr. The reaction mixture was poured into water, and the mixture was extracted with ethyl acetate. The extract was dried over anhydrous sodium sulfate and concentrated under reduced pressure. The obtained solid was recrystallized from dichloromethane-hexane to give the title compound (1.76 g, yield 27%) as pale-yellow crystals. the mixture was extracted with ethyl acetate The extract was dried over anhydrous sodium sulfate concentrated under reduced pressure The obtained solid was recrystallized from dichloromethane-hexane

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

Procedure: A solution of N-(3-methylbutyl)thiourea (3.00 g, 20.5 mmol), 2-bromo-1-[4-(trifluoromethyl)phenyl]ethanone (5.45 g, 20.5 mmol) and sodium acetate (2.19 g, 26.7 mmol) in ethanol (50 mL) was stirred at 90° C. for 4 hr. The reaction mixture was poured into water and extracted with ethyl acetate. The extract was dried over anhydrous sodium sulfate and concentrated under reduced pressure. The obtained solid was recrystallized from dichloromethane-hexane to give the title compound (1.76 g, yield 74%) as pale-yellow crystals. extracted with ethyl acetate The extract was dried over anhydrous sodium sulfate concentrated under reduced pressure The obtained solid was recrystallized from dichloromethane-hexane

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

Procedure: A solution of N-(3-methylbutyl)thiourea (3.00 g, 20.5 mmol), 2-bromo-1-[4-(trifluoromethyl)phenyl]ethanone (5.45 g, 20.5 mmol), sodium acetate (2.19 g, 26.7 mmol) in ethanol (50 mL) was stirred at 90° C. for 4 hr. The reaction mixture was poured into water, and the mixture was extracted with ethyl acetate. The extract was dried over anhydrous sodium sulfate, and concentrated under reduced pressure. The obtained solid was recrystallized from dichloromethane-hexane to give the title compound (1.76 g, yield 27%) as pale-yellow crystals. the mixture was extracted with ethyl acetate The extract was dried over anhydrous sodium sulfate concentrated under reduced pressure The obtained solid was recrystallized from dichloromethane-hexane