3,4,4-trifluorobut-3-enoyl chloride

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

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

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

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

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

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 2.2 g (0.0139 mole) 3,4,4-trifluoro-3-butenoyl chloride is added to a mixture of 3-aminobenzoic acid (1.37 g, 0.01 mole), sodium bicarbonate (0.84 g, 0.01 mole), water (20 mL) and dichloromethane (20 mL) with stirring at 0° C. After stirring for 15 min at room temperature, the mixture is diluted with ethyl acetate (100 mL) and water (50 mL). The organic layer is washed with 2N HCl and brine, and dried. The residue obtained after evaporation of the solvent is triturated with dry ether and filtered to give 1.8 g of the title compound as a light pink solid, a 69% yield. m.p. 252°-255° C. After stirring for 15 min at room temperature The organic layer is washed with 2N HCl and brine dried The residue obtained after evaporation of the solvent is triturated with dry ether filtered

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 2.2 g (0.0139 mole) 3,4,4-trifluoro-3-butenoyl chloride is added to a mixture of 3-aminobenzoic acid (1.37 g, 0.01 mole), sodium bicarbonate (0.84 g, 0.01 mole), water (20 mL) and dichloromethane (20 mL) with stirring at 0° C. After stirring for 15 min at room temperature, the mixture is diluted with ethyl acetate (100 mL) and water (50 mL). The organic layer is washed with 2N HCl and brine, and dried. The residue obtained after evaporation of the solvent is triturated with dry ether and filtered to give 1.8 g of the title compound as a light pink solid, a 69% yield. m.p. 252°-255° C. After stirring for 15 min at room temperature The organic layer is washed with 2N HCl and brine dried The residue obtained after evaporation of the solvent is triturated with dry ether filtered

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 2.5 g (0.0158 mole) 3,4,4-trifluoro-3-butenoyl chloride is added to a mixture of water (15 mL), dichloromethane (15 mL) and n-butyl amine (2.34 g, 0.032 mole) with stirring at 0° C. After stirring for 30 min, the organic layer is successively washed with 2N HCl, water, 5% sodium bicarbonate and brine, and dried. Evaporation of the solvent gave 2.85 g of title compound as a white solid, a 92% yield. m.p. 34°-36° C. After stirring for 30 min the organic layer is successively washed with 2N HCl, water, 5% sodium bicarbonate and brine dried Evaporation of the solvent

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 2.5 g (0.0158 mole) 3,4,4-trifluoro-3-butenoyl chloride is added to a mixture of water (15 mL), dichloromethane (15 mL) and n-butyl amine (2.34 g, 0.032 mole) with stirring at 0° C. After stirring for 30 min, the organic layer is successively washed with 2N HCl, water, 5% sodium bicarbonate and brine, and dried. Evaporation of the solvent gave 2.85 g of title compound as a white solid, a 92% yield. m.p. 34°-36° C. After stirring for 30 min the organic layer is successively washed with 2N HCl, water, 5% sodium bicarbonate and brine dried Evaporation of the solvent

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

Procedure: A solution of 3,4,4-trifluoro-3-butenoyl chloride (1.97 g, 0.0124 mole) and N-t-Boc-aminoethanol (1.61 g, 0.010 mole) in dry ether (20 mL) is treated with triethylamine (1.25 g, 0.0124 mole) at -78° C. with stirring. The mixture is stirred for 30 min and allowed to reach room temperature and poured in 20 mL of water. The ether layer is successively washed with 5% sodium bicarbonate and brine and dried. The ether solution is saturated with dry HCl gas and stirred at room temperature for 30 min. The precipitate is filtered and dried to give 1.6 g of the title compound as a white solid, a 77% yield. m.p. 94°-100° C. The mixture is stirred for 30 min to reach room temperature The ether layer is successively washed with 5% sodium bicarbonate and brine dried stirred at room temperature for 30 min The precipitate is filtered dried

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

Procedure: A solution of 3,4,4-trifluoro-3-butenoyl chloride (1.97 g, 0.0124 mole) and N-t-Boc-aminoethanol (1.61 g, 0.010 mole) in dry ether (20 mL) is treated with triethylamine (1.25 g, 0.0124 mole) at -78° C. with stirring. The mixture is stirred for 30 min and allowed to reach room temperature and poured in 20 mL of water. The ether layer is successively washed with 5% sodium bicarbonate and brine and dried. The ether solution is saturated with dry HCl gas and stirred at room temperature for 30 min. The precipitate is filtered and dried to give 1.6 g of the title compound as a white solid, a 77% yield. m.p. 94°-100° C. The mixture is stirred for 30 min to reach room temperature The ether layer is successively washed with 5% sodium bicarbonate and brine dried stirred at room temperature for 30 min The precipitate is filtered dried

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

Procedure: A mixture of 3,4,4-trifluoro-3-butenoyl chloride (2.5 g, 0.0158 mole) and 2-aminoethanethiol hydrochloride (1.14 g, 0.010 mole) is slowly heated to reflux for 15 min. The mixture is cooled to room temperature and treated with dry ether and filtered. The product is recrystallized from absolute ethanol to give 0.8 g of the title compound as a off-white solid, a 34% yield. m.p. 95°-115° C. is slowly heated to reflux for 15 min filtered The product is recrystallized from absolute ethanol