1-(2-aminoethyl)-3-(2,6-dichlorophenyl)thiourea

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

Procedure: 1-(2-Aminoethyl)-3-(2,6-dichlorophenyl)thiourea (200 mg) was dissolved under argon in THF (4 ml), admixed with a solution of sodium hydroxide (102 mg) in water (2 ml) and then a slurry of polystyrene-bound toluenesulfonyl chloride (457 mg, 2.9 mmol/g) in THF (4 ml) was added dropwise within five minutes. After stirring at room temperature for 2 h, further polystyrene-bound toluenesulfonyl chloride (65 mg in 2 ml of THF) was added, followed, after a further hour, by further acid chloride (124 mg in 2 ml of THF). After standing overnight, the reaction mixture was filtered, the resin was slurried twice in dichloromethane and the combined phases were concentrated to dryness. The residue was taken up in water/dichloromethane, the phases were separated and the aqueous phase was extracted three times with dichloromethane. The combined organic phases were dried over magnesium sulfate, and the solvent was removed under reduced pressure and the residue subsequently dried under high vacuum. 104 mg of the title compound were obtained. After standing overnight the reaction mixture was filtered the combined phases were concentrated to dryness the phases were separated the aqueous phase was extracted three times with dichloromethane The combined organic phases were dried over magnesium sulfate the solvent was removed under reduced pressure the residue subsequently dried under high vacuum

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

Procedure: 1-(2-Aminoethyl)-3-(2,6-dichlorophenyl)thiourea (200 mg) was dissolved under argon in THF (4 ml), admixed with a solution of sodium hydroxide (102 mg) in water (2 ml) and then a slurry of polystyrene-bound toluenesulfonyl chloride (457 mg, 2.9 mmol/g) in THF (4 ml) was added dropwise within five minutes. After stirring at room temperature for 2 h, further polystyrene-bound toluenesulfonyl chloride (65 mg in 2 ml of THF) was added, followed, after a further hour, by further acid chloride (124 mg in 2 ml of THF). After standing overnight, the reaction mixture was filtered, the resin was slurried twice in dichloromethane and the combined phases were concentrated to dryness. The residue was taken up in water/dichloromethane, the phases were separated and the aqueous phase was extracted three times with dichloromethane. The combined organic phases were dried over magnesium sulfate, and the solvent was removed under reduced pressure and the residue subsequently dried under high vacuum. 104 mg of the title compound were obtained. After standing overnight the reaction mixture was filtered the combined phases were concentrated to dryness the phases were separated the aqueous phase was extracted three times with dichloromethane The combined organic phases were dried over magnesium sulfate the solvent was removed under reduced pressure the residue subsequently dried under high vacuum

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

Procedure: A solution of 2,6-dichlorophenyl isothiocyanate (500 mg) and THF (5 ml) was added dropwise under argon within 20 minutes to a solution of ethylenediamine (3.68 g) and abs. THF (4 ml). After stirring for a further 30 min, the mixture was added to water, acidified with 10% HCl and extracted three times with ethyl acetate. The aqueous phase was made basic using saturated potassium carbonate solution, and extracted three times with ethyl acetate. The combined organic phases were dried over magnesium sulfate, the solvent was removed under reduced pressure and the residue was co-evaporated twice with toluene. After drying in high vacuum, the desired product was obtained as a white solid (532 mg). extracted three times with ethyl acetate extracted three times with ethyl acetate The combined organic phases were dried over magnesium sulfate the solvent was removed under reduced pressure After drying in high vacuum

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

Procedure: A solution of 2,6-dichlorophenyl isothiocyanate (500 mg) and THF (5 ml) was added dropwise under argon within 20 minutes to a solution of ethylenediamine (3.68 g) and abs. THF (4 ml). After stirring for a further 30 min, the mixture was added to water, acidified with 10% HCl and extracted three times with ethyl acetate. The aqueous phase was made basic using saturated potassium carbonate solution, and extracted three times with ethyl acetate. The combined organic phases were dried over magnesium sulfate, the solvent was removed under reduced pressure and the residue was co-evaporated twice with toluene. After drying in high vacuum, the desired product was obtained as a white solid (532 mg). extracted three times with ethyl acetate extracted three times with ethyl acetate The combined organic phases were dried over magnesium sulfate the solvent was removed under reduced pressure After drying in high vacuum

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

Procedure: A solution of 12.68 g. of 1-(2-aminoethyl)-3-(2,6-dichlorophenyl)thiourea in 80 ml. of ethanol, 4.0 ml. of concentrated hydrochloric acid and 12 ml. of iodomethane was refluxed for 2 hours. On cooling, the mixture was poured onto 200 ml. of water and sufficient 4N sodium hydroxide was added to bring the pH to 11. The aqueous solution was extracted 3 × 150 ml. of methylene chloride, and the combined organic layers were washed 1 × 100 ml. of water, dried over potassium carbonate and concentrated. The resulting gum gave a solid on standing, i.e., 1-(2-aminoethyl)-3-(2,6-dichlorophenyl)-2-methylthiopseudourea, m.p. 74°-79°, whose spectral data were consistent with the assigned structure. The material was too labile for purification and was acidified with hydrochloric acid and crystallized from ethanol-ether to give 14.10 g. (84%) of 1-(2-aminoethyl)-3-(2,6-dichlorophenyl)-2-methylthiopseudourea dihydrochloride, m.p. 179°-184°. Two crystallizations from ethanol-ether gave an analytical sample, m.p. 179°-182°. On cooling the mixture was poured onto 200 ml The aqueous solution was extracted 3 × 150 ml of methylene chloride, and the combined organic layers were washed 1 × 100 ml of water, dried over potassium carbonate concentrated

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

Procedure: 1-(2-Aminoethyl)-3-(2,6-dichlorophenyl)thiourea (200 mg) was dissolved under argon in THF (4 ml), admixed with a solution of sodium hydroxide (102 mg) in water (2 ml) and then a slurry of polystyrene-bound toluenesulfonyl chloride (457 mg, 2.9 mmol/g) in THF (4 ml) was added dropwise within five minutes. After stirring at room temperature for 2 h, further polystyrene-bound toluenesulfonyl chloride (65 mg in 2 ml of THF) was added, followed, after a further hour, by further acid chloride (124 mg in 2 ml of THF). After standing overnight, the reaction mixture was filtered, the resin was slurried twice in dichloromethane and the combined phases were concentrated to dryness. The residue was taken up in water/dichloromethane, the phases were separated and the aqueous phase was extracted three times with dichloromethane. The combined organic phases were dried over magnesium sulfate, and the solvent was removed under reduced pressure and the residue subsequently dried under high vacuum. 104 mg of the title compound were obtained. After standing overnight the reaction mixture was filtered the combined phases were concentrated to dryness the phases were separated the aqueous phase was extracted three times with dichloromethane The combined organic phases were dried over magnesium sulfate the solvent was removed under reduced pressure the residue subsequently dried under high vacuum

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

Procedure: A solution of 2,6-dichlorophenyl isothiocyanate (500 mg) and THF (5 ml) was added dropwise under argon within 20 minutes to a solution of ethylenediamine (3.68 g) and abs. THF (4 ml). After stirring for a further 30 min, the mixture was added to water, acidified with 10% HCl and extracted three times with ethyl acetate. The aqueous phase was made basic using saturated potassium carbonate solution, and extracted three times with ethyl acetate. The combined organic phases were dried over magnesium sulfate, the solvent was removed under reduced pressure and the residue was co-evaporated twice with toluene. After drying in high vacuum, the desired product was obtained as a white solid (532 mg). extracted three times with ethyl acetate extracted three times with ethyl acetate The combined organic phases were dried over magnesium sulfate the solvent was removed under reduced pressure After drying in high vacuum

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

Procedure: A solution of 12.68 g. of 1-(2-aminoethyl)-3-(2,6-dichlorophenyl)thiourea in 80 ml. of ethanol, 4.0 ml. of concentrated hydrochloric acid and 12 ml. of iodomethane was refluxed for 2 hours. On cooling, the mixture was poured onto 200 ml. of water and sufficient 4N sodium hydroxide was added to bring the pH to 11. The aqueous solution was extracted 3×150 ml. of methylene chloride, and the combined organic layers were washed 1×100 ml. of water, dried over potassium carbonate and concentrated. The resulting gum gave a solid on standing, i.e., 1-(2-aminoethyl)-3-(2,6-dichlorophenyl)-2-methylthiopseudourea, m.p. 74°-79°, whose spectral data were consistent with the assigned structure. The material was too labile for purification and was acidified with hydrochloric acid and crystallized from ethanol-ether to give 14.10 g. (84%) of 1-(2-aminoethyl)-3-(2,6-dichlorophenyl)-2-methylthiopseudourea dihydrochloride, m.p. 179°-184°. Two crystallizations from ethanol-ether gave an analytical sample, m.p. 179°-182°. On cooling the mixture was poured onto 200 ml The aqueous solution was extracted 3×150 ml of methylene chloride, and the combined organic layers were washed 1×100 ml of water, dried over potassium carbonate concentrated

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

Procedure: A solution of 12.68 g. of 1-(2-aminoethyl)-3-(2,6-dichlorophenyl)thiourea in 80 ml. of ethanol, 4.0 ml. of concentrated hydrochloric acid and 12 ml. of iodomethane was refluxed for 2 hours. On cooling, the mixture was poured onto 200 ml. of water and sufficient 4N sodium hydroxide was added to bring the pH to 11. The aqueous solution was extracted 3×150 ml. of methylene chloride, and the combined organic layers were washed 1×100 ml. of water, dried over potassium carbonate and concentrated. The resulting gum gave a solid on standing, i.e., 1-(2-aminoethyl)-3-(2,6-dichlorophenyl)-2-methylthiopseudourea, m.p. 74°-79°, whose spectral data were consistent with the assigned structure. The material was too labile for purification and was acidified with hydrochloric acid and crystallized from ethanol-ether to give 14.10 g. (84%) of 1-(2-aminoethyl)-3-(2,6-dichlorophenyl)-2-methylthiopseudourea dihydrochloride, m.p. 179°-184°. Two crystallizations from ethanol-ether gave an analytical sample, m.p. 179°-182°. On cooling the mixture was poured onto 200 ml The aqueous solution was extracted 3×150 ml of methylene chloride, and the combined organic layers were washed 1×100 ml of water, dried over potassium carbonate concentrated

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

Procedure: A solution of 12.68 g. of 1-(2-aminoethyl)-3-(2,6-dichlorophenyl)thiourea in 80 ml. of ethanol, 4.0 ml. of concentrated hydrochloric acid and 12 ml. of iodomethane was refluxed for 2 hours. On cooling, the mixture was poured onto 200 ml. of water and sufficient 4 N sodium hydroxide was added to bring the pH to 11. The aqueous solution was extracted 3×150 ml. of methylene chloride, and the combined organic layers were washed 1×100 ml. of water, dried over potassium carbonate and concentrated. The resulting gum gave a solid on standing, i.e., 1-(2-aminoethyl)-3-(2,6-dichlorophenyl)-2-methylthiopseudourea, m.p. 74°-79°, whose spectral data were consistent with the assigned structure. The material was too labile for purification and was acidified with hydrochloric acid and crystallized from ethanol-ether to give 14.10 g. (84%) of 1-(2-aminoethyl)-3-(2,6-dichlorophenyl)-2-methylthiopseudourea dihydrochloride, m.p. 179°-184°. Two crystallizations from ethanol-ether gave an analytical sample, m.p. 179°-182°. On cooling the mixture was poured onto 200 ml The aqueous solution was extracted 3×150 ml of methylene chloride, and the combined organic layers were washed 1×100 ml of water, dried over potassium carbonate concentrated

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

Procedure: A solution of 12.68 g. of 1-(2-aminoethyl)-3-(2,6-dichlorophenyl)thiourea in 80 ml. of ethanol, 4.0 ml. of concentrated hydrochloric acid and 12 ml. of iodomethane was refluxed for 2 hours. On cooling, the mixture was poured onto 200 ml. of water and sufficient 4N sodium hydroxide was added to bring the pH to 1 l. The aqueous solution was extracted 3 × 150 ml. of methylene chloride, and the combined organic layers were washed 1 × 100 ml. of water, dried over potassium carbonate and concentrated. The resulting gum gave a solid on standing, i.e., 1-(2-aminoethyl)-3-(2,6-dichlorophenyl)-2-methylthiopseudourea, m.p. 74°-79°, whose spectral data were consistent with the assigned structure. The material was too labile for purification and was acidified with hydrochloric acid and crystallized from ethanol-ether to give 14.10 g. (84%) of 1-(2-aminoethyl)-3-(2,6-dichlorophenyl)-2-methylthiopseudourea dihydrochloride, m.p. 179°-184°. Two crystallizations from ethanol-ether gave an analytical sample, m.p. 179°-182°. On cooling the mixture was poured onto 200 ml The aqueous solution was extracted 3 × 150 ml of methylene chloride, and the combined organic layers were washed 1 × 100 ml of water, dried over potassium carbonate concentrated

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

Procedure: A solution of 12.68 g. of 1-(2-aminoethyl)-3-(2,6-dichlorophenyl)thiourea in 80 ml. of ethanol, 4.0 ml. of concentrated hydrochloric acid and 12 ml. of iodomethane was refluxed for 2 hours. On cooling, the mixture was poured onto 200 ml. of water and sufficient 4N sodium hydroxide was added to bring the pH to 11. The aqueous solution was extracted 3 × 150 ml. of methylene chloride, and the combined organic layers were washed 1 × 100 ml. of water, dried over potassium carbonate and concentrated. The resulting gum gave a solid on standing, i.e., 1-(2-aminoethyl)-3-(2,6-dichlorophenyl)-2-methylthiopseudourea, m.p. 74°-79°, whose spectral data were consistent with the assigned structure. The material was too labile for purification and was acidified with hydrochloric acid and crystallized from ethanol-ether to give 14.10 g. (84%) of 1-(2-aminoethyl)-3-(2,6-dichlorophenyl)-2-methylthiopseudourea dihydrochloride, m.p. 179°-184°. Two crystallizations from ethanol-ether gave an analytical sample, m.p. 179°-182°. On cooling the mixture was poured onto 200 ml The aqueous solution was extracted 3 × 150 ml of methylene chloride, and the combined organic layers were washed 1 × 100 ml of water, dried over potassium carbonate concentrated