3,3-dichloroprop-2-enal

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

Procedure: Water (20 mmoles) is added to a solution of 1,1,1,3-tetrachloro-3-ethoxypropane (10 mmoles) in dimethoxyethane (25 ml). The mixture is stirred for 2 h at 60° C. The resulting mixture is slowly added to a mixture consisting of a pyrazine-2-carboxamidine hydrochloride (10 mmoles). 2-difluoromethoxypyridin-4-ol (10 mmoles), potassium carbonate (60 mmoles) and dimethoxyethane (50 ml), which is stirred under reflux. When the addition of 3,3-dichloroacrolein solution is completed additional pyrazine-2-carboxamidine hydrochloride (0.5 mmoles) is added. The reaction mixture is stirred for 2 hours under reflux and subsequently cooled down to ambient temperature, filtered through silica, and the organic phase is concentrated in vacuo. The residue is purified by chromatograph on SiO2 (ethyl acetate) to yield 2,60 g (82%) of beige crystals having a melting point of 128-129° C. The resulting mixture is slowly added to a mixture under reflux is added The reaction mixture is stirred for 2 hours under reflux subsequently cooled down to ambient temperature filtered through silica the organic phase is concentrated in vacuo The residue is purified by chromatograph on SiO2 (ethyl acetate)

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

Procedure: 3,3-Dichloroacrolein (10 mmoles) diluted with dimethoxyethane (35 ml), is slowly added to a mixture consisting of a cyclopropylcarbamidine hydrochloride (10 mmoles), 3-trifluoromethylphenol (11 mmoles), potassium carbonate (40 rnmoles) and dimethyoxyethane (40 ml), which is stirred under reflux. When the addition of 3,3-dichloroacrolein is completed additional cyclopropylcarbamidine hydrochloride (1 mmoles) is added. The reaction mixture is stirred for 3 hours under reflux and subsequently cooled down to ambient temperature over night and filtered through silica. The organic phase is concentrated in vacuo. The residue was purified by chromatography on Al2O3 (petrol ethers/ethyl acetate: 20/1) to yield 2.1 g (75%) of the pure product having as a colorless liquid; 1H NMR (CDC13); δ=2.10 ppm (m, N═C(═N)═CH). is slowly added to a mixture under reflux is added The reaction mixture is stirred for 3 hours under reflux filtered through silica The organic phase is concentrated in vacuo The residue was purified by chromatography on Al2O3 (petrol ethers/ethyl acetate: 20/1)

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

Procedure: 3,3-Dichloroacrolein (10 mmoles) diluted with dimethoxyethane (35 ml), is slowly added to a mixture consisting of a 4-fluorobenzamidine acetate (10 mmoles), 3-trifluoromethylphenol (11 mmoles), potassium carbonate (40 mmoles) nd dimethoxyethane (40 ml), which is stirred under reflux. When the addition of 3,3-dichloroacrolein is completed additional 4-fluorobenzamidine acetate (1 mmoles) is added. The reaction mixture is stirred for 3 hours under reflux and subsequently cooled down to ambient temperature over night and filtered through silica. The organic phase is concentrated in vacuo. The residue was purified by chromatography on Al2O3 (petrol ethers/ethyl acetate: 20/1) to yield 2.52 g (75%) of the pure product having a melting point of 52° C. is slowly added to a mixture under reflux is added The reaction mixture is stirred for 3 hours under reflux filtered through silica The organic phase is concentrated in vacuo The residue was purified by chromatography on Al2O3 (petrol ethers/ethyl acetate: 20/1)

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

Procedure: 3,3-Dichloroacrolein (10 mmoles) diluted with dimethoxyethane (35 ml), is slowly added to a mixture consisting of a 4-chlorobenzamidine hydrochloride (10 mmoles), 3-trifluoromethylphenol (11 mmoles), potassium carbonate (40 mmoles) and dimethoxyethane (40 ml), which is stirred under reflux. When the addition of 3,3-dichloroacrolein is completed additional 4-chlorobenzamidine hydrochloride (1 mmoles) is added. The reaction mixture is stirred for 3 hours under reflux and subsequently cooled down to ambient temperature over night and filtered through silica. The organic phase is concentrated in vacuo. The residue was purified by chromatography on Al2O3 (petrol ethers/ethyl acetate: 20/1) to yield 2.79 g (80%) of the pure product having a melting point of 92° C. is slowly added to a mixture under reflux is added The reaction mixture is stirred for 3 hours under reflux filtered through silica The organic phase is concentrated in vacuo The residue was purified by chromatography on Al2O3 (petrol ethers/ethyl acetate: 20/1)

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

Procedure: Water (20 mmoles) is added to a solution of 1,1,1,3-tetrachloro-3-ethoxypropane (10 mmoles) in dimethoxyethane (25 ml). The reaction mixture is stirred for 2 h under reflux. The resulting mixture is slowly added to a mixture consisting of a 4-trifluoromethylbenzamidine hydrochloride (10 mmoles), 3-trifluoromethylphenol (11 mmoles), potassium carbonate (60 mmoles) and dimethoxyethane (50 ml), which is stirred under reflux. When the addition of 3,3-dichloroacrolein solution is completed additional 4-trifluoromethylbenzamidine hydrochloride (1 mmoles) is added. The reaction mixture is stirred for 2 hours under reflux and subsequently cooled down to ambient temperature, filtered through silica, and the organic phase is concentrated in vacuo. The residue is purified by chromatography on SiO2 (petrol ethers/diisopropylether: 6/1) to yield 3,07 g (80%) of the product having a melting point of 66-67° C. under reflux The resulting mixture is slowly added to a mixture is stirred under reflux is added The reaction mixture is stirred for 2 hours under reflux filtered through silica the organic phase is concentrated in vacuo The residue is purified by chromatography on SiO2 (petrol ethers/diisopropylether: 6/1)

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

Procedure: 3-Trifluoromethylphenol (5 mmoles) and subsequently 3,3-dichloroacrolein (5 mmoles) are added to a mixture consisting of a 4-trifluoromethylbenzamidinium acetate (5 mmoles), sodium carbonate (40 mmoles) and acetonitril (35 ml), which is stirred under reilux. The reaction mixture is stirred for 20 hours under reflux and subsequently cooled down to ambient temperature and filtered through silica. The organic phase is washed with ethyl acetate and concentrated in vacuo. The residue is purified by chromatography on Al2O3 (petrol ethers/ethyl acetate: 2/1) to yield 1.1 g (60%) of the pure product having a melting point of 66-67° C. The reaction mixture is stirred for 20 hours under reflux filtered through silica The organic phase is washed with ethyl acetate concentrated in vacuo The residue is purified by chromatography on Al2O3 (petrol ethers/ethyl acetate: 2/1)

Conditions: temp:90.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Water (20 mmoles) is added to a solution of 1,1,1,3-tetrachloro-3-ethoxypropane (10 mmoles) in dimethoxyethane (25 ml). The mixture is stirred for 2 h at 90° C. The resulting mixture is slowly added to a mixture consisting of a 3,5-dimethylpyrazole-1-carboxamidine nitrate (10 mmoles), 3-trifluoromethylphenol (10 mmoles), potassium carbonate (60 mmoles) and dimethoxyethane (50 ml), which is stirred under reflux. When the addition of 3,3-dichloroacrolein solution is completed additional 3,5-dimethylpyrazole-1-carboxamidine nitrate (0.5 mmoles) is added. The reaction mixture is stirred for 10 hours under reflux and subsequently cooled down to ambient temperature, filtered through silica, and the organic phase is concentrated in vacuo. The residue is purified by chromatography on SiO2 (ethyl acetate) to give 2,2 g of a yellow solid. The solid was washed with petrol ether (50 ml) to yield 1,75 g (52%) of colorless crystals having a melting point of 101-102° C. The resulting mixture is slowly added to a mixture is stirred under reflux is added The reaction mixture is stirred for 10 hours under reflux subsequently cooled down to ambient temperature filtered through silica the organic phase is concentrated in vacuo The residue is purified by chromatography on SiO2 (ethyl acetate)

Conditions: temp:90.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Water (20 mmoles) is added to a solution of 1,1,1,3-tetrachloro-3-ethoxypropane (10 mmoles) in dimethoxyethane (25 ml). The mixture is stirred for 2 h at 90° C. The resulting mixture is slowly added to a mixture consisting of a 3,5-dimethylpyrazole-1-carboxamidine nitrate (10 mmoles), 3-trifluoromethylphenol (10 mmoles), potassium carbonate (60 mmoles) and dimethoxyethane (50 ml), which is stirred under reflux. When the addition of 3,3-dichloroacrolein solution is completed additional 3,5-dimethylpyrazole-1-carboxamidine nitrate (0.5 mmoles) is added. The reaction mixture is stirred for 10 hours under reflux and subsequently cooled down to ambient temperature, filtered through silica, and the organic phase is concentrated in vacuo. The residue is purified by chromatography on SiO2 (ethyl acetate) to give 2,2 g of a yellow solid. The solid was washed with petrol ether (50 ml) to yield 1,75 g (52%) of colorless crystals having a melting point of 101-102° C. The resulting mixture is slowly added to a mixture is stirred under reflux is added The reaction mixture is stirred for 10 hours under reflux subsequently cooled down to ambient temperature filtered through silica the organic phase is concentrated in vacuo The residue is purified by chromatography on SiO2 (ethyl acetate)

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

Procedure: Water (20 mmoles) is added to a solution of 1,1,1,3-tetrachloro-3-ethoxypropane (10 mmoles) in dimethoxyethane (25 ml). The mixture is stirred for 2 h at 60° C. The resulting mixture is slowly added to a mixture consisting of a pyrazine-2-carboxamidine hydrochloride (10 mmoles), 2-difluoromethoxypyridin-4-ol (10 mmoles), potassium carbonate (60 mmoles) and dimethoxyethane (50 ml), which is stirred under reflux. When the addition of 3,3-dichloroacrolein solution is completed additional pyrazine-2-carboxamidine hydrochloride (0.5 mmoles) is added. The reaction mixture is stirred for 2 hours under reflux and subsequently cooled down to ambient temperature, filtered through silica, and the organic phase is concentrated in vacuo. The residue is purified by chromatography on SiO2 (ethyl acetate) to yield 2,60 g (82%) of beige crystals having a melting point of 128-129° C. The resulting mixture is slowly added to a mixture is stirred under reflux is added The reaction mixture is stirred for 2 hours under reflux subsequently cooled down to ambient temperature filtered through silica the organic phase is concentrated in vacuo The residue is purified by chromatography on SiO2 (ethyl acetate)

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

Procedure: 3,3-Dichloroacrolein (10 mmoles) diluted with dimethoxyethane (35 ml), is slowly added to a mixture consisting of a cyclopropylcarbamidine hydrochloride (10 mmoles), 3-trifluoromethylphenol (11 mmoles), potassium carbonate (40 mmoles) and dimethoxyethane (40 ml), which is stirred under reflux. When the addition of 3,3-dichloroacrolein is completed additional cyclopropylcarbamidine hydrochloride (1 mmoles) is added. The reaction mixture is stirred for 3 hours under reflux and subsequently cooled down to ambient temperature over night and filtered through silica. The organic phase is concentrated in vacuo. The residue was purified by chromatography on Al2O3 (petrol ethers/ethyl acetate : 20/1) to yield 2.1 g (75%) of the pure product having as a colorless liquid; 1H NMR (CDCl3); δ=2.10 ppm (m, N═C(═N)—CH). is slowly added to a mixture under reflux is added The reaction mixture is stirred for 3 hours under reflux filtered through silica The organic phase is concentrated in vacuo The residue was purified by chromatography on Al2O3 (petrol ethers/ethyl acetate : 20/1)

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

Procedure: 3,3-Dichloroacrolein (10 mmoles) diluted with dimethoxyethane (35 ml), is slowly added to a mixture consisting of a cyclopropylcarbamidine hydrochloride (10 mmoles), 3-trifluoromethylphenol (11 mmoles), potassium carbonate (40 mmoles) and dimethoxyethane (40 ml), which is stirred under reflux. When the addition of 3,3-dichloroacrolein is completed additional cyclopropylcarbamidine hydrochloride (1 mmoles) is added. The reaction mixture is stirred for 3 hours under reflux and subsequently cooled down to ambient temperature over night and filtered through silica. The organic phase is concentrated in vacuo. The residue was purified by chromatography on Al2O3 (petrol ethers/ethyl acetate : 20/1) to yield 2.1 g (75%) of the pure product having as a colorless liquid; 1H NMR (CDCl3); δ=2.10 ppm (m, N═C(═N)—CH). is slowly added to a mixture under reflux is added The reaction mixture is stirred for 3 hours under reflux filtered through silica The organic phase is concentrated in vacuo The residue was purified by chromatography on Al2O3 (petrol ethers/ethyl acetate : 20/1)

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

Procedure: 3,3-Dichloroacrolein (10 mmoles) diluted with dimethoxyethane (35 ml), is slowly added to a mixture consisting of a 4-fluorobenzamidine acetate (10 mmoles), 3-trifluoromethylphenol (11 mmoles), potassium carbonate (40 mmoles) and dimethoxyethane (40 ml), which is stirred under reflux. When the addition of 3,3-dichloroacrolein is completed additional 4-fluorobenzamidine acetate (1 mmoles) is added. The reaction mixture is stirred for 3 hours under reflux and subsequently cooled down to ambient temperature over night and filtered through silica. The organic phase is concentrated in vacuo. The residue was purified by chromatography on Al2O3 (petrol ethers/ethyl acetate: 20/1) to yield 2.52 g (75%) of the pure product having a melting point of 52° C. is slowly added to a mixture under reflux is added The reaction mixture is stirred for 3 hours under reflux filtered through silica The organic phase is concentrated in vacuo The residue was purified by chromatography on Al2O3 (petrol ethers/ethyl acetate: 20/1)