1-(4-chlorophenyl)-2-methyl-2-morpholin-4-ylpropan-1-one

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

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

Procedure: 40 g (0.15 mol) of 1-(4-chlorophenyl)-2-methyl-2-morpholin-4-yl-propan-1-one and 109 g (0.89 mol) of 1,4-butanedithiol are dissolved in 300 ml of dimethylacetamide, and the solution is stirred at around 100° C. together with 41 g of potassium carbonate for 5 h. Then the solution is cooled to room temperature and poured into water. The crude product is extracted with ethyl acetate, washed with saturated sodium chloride solution, dried over MgSO4, and concentrated. The residue is purified by column chromatography on silica gel with ethyl acetate -hexane (20:80) as an eluent. Melting point 98 ° C. The structure is confirmed by the 1H-NMR spectrum (CDCl3): δ [ppm] 1.31 (s, 6H), 1.36 (t, 1H), 1.76-1.90 (m, 4H), 2.53-2.62 (m, 6H), 2.98-3.04 (m, 2H), 3.69 (t, 4H), 7.25 (d, 2H), 8.50 (d, 2H). The crude product is extracted with ethyl acetate washed with saturated sodium chloride solution dried over MgSO4 concentrated The residue is purified by column chromatography on silica gel with ethyl acetate -hexane (20:80) as an eluent

Conditions: temp:85.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 51.7 g (0.25 mol) of 1,10-decanedithiol are added to a suspension of 13.9 g (0.10 mol) of potassium carbonate in 50 ml of dimethylacetamide. The suspension is heated to 85° C., and a solution of 13.4 g (0.05 mol) of 1-(4-chlorophenyl)-2-methyl-2-morpholin-4-yl-propan-1-one in 25 ml of dimethylacetamide is added dropwise over 5 h. After stirring for 18 h, the solid is filtered off, the filtrate is poured into 30 ml of 2N HCl solution. The formed white precipitate is collected by filtration and then dissolved in methylene chloride and neutralized with 30 ml of 2N NaOH solution. After methylene chloride is distilled off, the residual crystals are further purified by recrystallization from chloroform-ethanol (20:80). The obtained product has a melting point of 87-90° C. The structure is confirmed by the 1H-NMR spectrum (CDCl3): δ [ppm] 1.28-1.39 (m, 9H), 1.45 (m, 2H),1.31 (s, 6H), 1.64 (q, 4H), 1.69 (m, 2H), 2.52 (q, 2H), 2.56 (m, 4H), 2.99 (m, 2H), 3.71 (m, 4H), 7.26 (d, 2H), 8.49 (d, 2H). the solid is filtered off the filtrate is poured into 30 ml of 2N HCl solution The formed white precipitate is collected by filtration dissolved in methylene chloride and neutralized with 30 ml of 2N NaOH solution After methylene chloride is distilled off the residual crystals are further purified by recrystallization from chloroform-ethanol (20:80)

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

Procedure: 25.7 g (0.15 mol) of 2-mercaptoethylsulfide (purity 90%) are added to a suspension of 8.3 g (0.06 mol) of potassium carbonate in 50 ml of dimethylacetamide. A solution of 8.0 g (0.03 mol) 1-(4-chlorophenyl)-2-methyl-2-morpholin-4-yl-propan-1-one in 25 ml of dimethylacetamide is added dropwise at 85° C. over 60 min. After stirring for 5 h, the reaction mixture is cooled, diluted with ethyl acetate (100 ml), extracted with water (3×100 ml) to remove the carbonate and dimethylacetamide, dried over MgSO4, and concentrated under vacuum. The resulting yellow liquid (stench) is purified by flash chromatography on silica gel (hexane/ethyl acetate 85:15) to yield a pale yellow oil. The structure is confirmed by the 1H-NMR spectrum (CDCl3): δ [ppm] 1.31 (s, 6H), 1.750 (t, SH), 2.57 (t, 4H), 2.71-2.85 (m, 6H), 3.20 (t, 2H), 3.70 (t, 4), 7.31 (d, 2H), 8.51 (d, 2H). the reaction mixture is cooled extracted with water (3×100 ml) to remove the carbonate and dimethylacetamide dried over MgSO4 concentrated under vacuum The resulting yellow liquid (stench) is purified by flash chromatography on silica gel (hexane/ethyl acetate 85:15) to yield a pale yellow oil

Conditions: temp:85.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 10.0 g (0.066 mol) of 1,6-hexanedithiol are added to a suspension of 3.6 g (0.026 mol) of potassium carbonate in 15 ml of dimethylacetamide. The suspension is heated to 85° C., and a solution of 3.6 g (0.013 mol) of 1-(4-chlorophenyl)-2-methyl-2-morpholin-4-yl-propan-1-one in 20 ml of dimethylacetamide is added dropwise over 20 min. After stirring for 18 h, the reaction mixture is cooled, diluted with ethyl acetate (60 ml), and filtered. The filtrate is washed with water (3×50 ml), dried over MgSO4, and concentrated i.v. (85° C./5 mm Hg). The resulting oil is purified by flash chromatography on silica gel (hexane/ethyl acetate 85:15) to a pale yellow oil which crystallizes to a colorless solid upon standing. m.p. 61-64° C. The structure is confirmed by the 1H-NMR spectrum (CDCl3): δ [ppm] 1.31 (s, 6H), 1.35 (t, SH), 1.4-1.8 (m, 8H), 2.53 (q, 2H), 2.57 (t, 4H), 3.00 (t, 2H), 3.69 (t, 4H), 7.24 (d, 2H), 8.50 (d, 2H). the reaction mixture is cooled filtered The filtrate is washed with water (3×50 ml) dried over MgSO4 concentrated i.v (85° C./5 mm Hg) The resulting oil is purified by flash chromatography on silica gel (hexane/ethyl acetate 85:15) to a pale yellow oil which crystallizes to a colorless solid

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

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

Procedure: 40 g (0.15 mol) of 1-(4-chlorophenyl)-2-methyl-2-morpholin-4-yl-propan-1-one and 109 g (0.89 mol) of 1,4-butanedithiol are dissolved in 300 ml of dimethylacetamide, and the solution is stirred at around 100° C. together with 41 g of potassium carbonate for 5 h. Then the solution is cooled to room temperature and poured into water. The crude product is extracted with ethyl acetate, washed with saturated sodium chloride solution, dried over MgSO4, and concentrated. The residue is purified by column chromatography on silica gel with ethyl acetate -hexane (20:80) as an eluent. Melting point 98 ° C. The structure is confirmed by the 1H-NMR spectrum (CDCl3): δ [ppm] 1.31 (s, 6H), 1.36 (t, 1H), 1.76-1.90 (m, 4H), 2.53-2.62 (m, 6H), 2.98-3.04 (m, 2H), 3.69 (t, 4H), 7.25 (d, 2H), 8.50 (d, 2H). The crude product is extracted with ethyl acetate washed with saturated sodium chloride solution dried over MgSO4 concentrated The residue is purified by column chromatography on silica gel with ethyl acetate -hexane (20:80) as an eluent

Conditions: temp:85.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 51.7 g (0.25 mol) of 1,10-decanedithiol are added to a suspension of 13.9 g (0.10 mol) of potassium carbonate in 50 ml of dimethylacetamide. The suspension is heated to 85° C., and a solution of 13.4 g (0.05 mol) of 1-(4-chlorophenyl)-2-methyl-2-morpholin-4-yl-propan-1-one in 25 ml of dimethylacetamide is added dropwise over 5 h. After stirring for 18 h, the solid is filtered off, the filtrate is poured into 30 ml of 2N HCl solution. The formed white precipitate is collected by filtration and then dissolved in methylene chloride and neutralized with 30 ml of 2N NaOH solution. After methylene chloride is distilled off, the residual crystals are further purified by recrystallization from chloroform-ethanol (20:80). The obtained product has a melting point of 87-90° C. The structure is confirmed by the 1H-NMR spectrum (CDCl3): δ [ppm] 1.28-1.39 (m, 9H), 1.45 (m, 2H),1.31 (s, 6H), 1.64 (q, 4H), 1.69 (m, 2H), 2.52 (q, 2H), 2.56 (m, 4H), 2.99 (m, 2H), 3.71 (m, 4H), 7.26 (d, 2H), 8.49 (d, 2H). the solid is filtered off the filtrate is poured into 30 ml of 2N HCl solution The formed white precipitate is collected by filtration dissolved in methylene chloride and neutralized with 30 ml of 2N NaOH solution After methylene chloride is distilled off the residual crystals are further purified by recrystallization from chloroform-ethanol (20:80)

Conditions: temp:85.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 51.7 g (0.25 mol) of 1,10-decanedithiol are added to a suspension of 13.9 g (0.10 mol) of potassium carbonate in 50 ml of dimethylacetamide. The suspension is heated to 85° C., and a solution of 13.4 g (0.05 mol) of 1-(4-chlorophenyl)-2-methyl-2-morpholin-4-yl-propan-1-one in 25 ml of dimethylacetamide is added dropwise over 5 h. After stirring for 18 h, the solid is filtered off, the filtrate is poured into 30 ml of 2N HCl solution. The formed white precipitate is collected by filtration and then dissolved in methylene chloride and neutralized with 30 ml of 2N NaOH solution. After methylene chloride is distilled off, the residual crystals are further purified by recrystallization from chloroform-ethanol (20:80). The obtained product has a melting point of 87-90° C. The structure is confirmed by the 1H-NMR spectrum (CDCl3): δ [ppm] 1.28-1.39 (m, 9H), 1.45 (m, 2H),1.31 (s, 6H), 1.64 (q, 4H), 1.69 (m, 2H), 2.52 (q, 2H), 2.56 (m, 4H), 2.99 (m, 2H), 3.71 (m, 4H), 7.26 (d, 2H), 8.49 (d, 2H). the solid is filtered off the filtrate is poured into 30 ml of 2N HCl solution The formed white precipitate is collected by filtration dissolved in methylene chloride and neutralized with 30 ml of 2N NaOH solution After methylene chloride is distilled off the residual crystals are further purified by recrystallization from chloroform-ethanol (20:80)

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

Procedure: 25.7 g (0.15 mol) of 2-mercaptoethylsulfide (purity 90%) are added to a suspension of 8.3 g (0.06 mol) of potassium carbonate in 50 ml of dimethylacetamide. A solution of 8.0 g (0.03 mol) 1-(4-chlorophenyl)-2-methyl-2-morpholin-4-yl-propan-1-one in 25 ml of dimethylacetamide is added dropwise at 85° C. over 60 min. After stirring for 5 h, the reaction mixture is cooled, diluted with ethyl acetate (100 ml), extracted with water (3×100 ml) to remove the carbonate and dimethylacetamide, dried over MgSO4, and concentrated under vacuum. The resulting yellow liquid (stench) is purified by flash chromatography on silica gel (hexane/ethyl acetate 85:15) to yield a pale yellow oil. The structure is confirmed by the 1H-NMR spectrum (CDCl3): δ [ppm] 1.31 (s, 6H), 1.750 (t, SH), 2.57 (t, 4H), 2.71-2.85 (m, 6H), 3.20 (t, 2H), 3.70 (t, 4), 7.31 (d, 2H), 8.51 (d, 2H). the reaction mixture is cooled extracted with water (3×100 ml) to remove the carbonate and dimethylacetamide dried over MgSO4 concentrated under vacuum The resulting yellow liquid (stench) is purified by flash chromatography on silica gel (hexane/ethyl acetate 85:15) to yield a pale yellow oil

Conditions: temp:85.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 10.0 g (0.066 mol) of 1,6-hexanedithiol are added to a suspension of 3.6 g (0.026 mol) of potassium carbonate in 15 ml of dimethylacetamide. The suspension is heated to 85° C., and a solution of 3.6 g (0.013 mol) of 1-(4-chlorophenyl)-2-methyl-2-morpholin-4-yl-propan-1-one in 20 ml of dimethylacetamide is added dropwise over 20 min. After stirring for 18 h, the reaction mixture is cooled, diluted with ethyl acetate (60 ml), and filtered. The filtrate is washed with water (3×50 ml), dried over MgSO4, and concentrated i.v. (85° C./5 mm Hg). The resulting oil is purified by flash chromatography on silica gel (hexane/ethyl acetate 85:15) to a pale yellow oil which crystallizes to a colorless solid upon standing. m.p. 61-64° C. The structure is confirmed by the 1H-NMR spectrum (CDCl3): δ [ppm] 1.31 (s, 6H), 1.35 (t, SH), 1.4-1.8 (m, 8H), 2.53 (q, 2H), 2.57 (t, 4H), 3.00 (t, 2H), 3.69 (t, 4H), 7.24 (d, 2H), 8.50 (d, 2H). the reaction mixture is cooled filtered The filtrate is washed with water (3×50 ml) dried over MgSO4 concentrated i.v (85° C./5 mm Hg) The resulting oil is purified by flash chromatography on silica gel (hexane/ethyl acetate 85:15) to a pale yellow oil which crystallizes to a colorless solid

Conditions: temp:85.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 10.0 g (0.066 mol) of 1,6-hexanedithiol are added to a suspension of 3.6 g (0.026 mol) of potassium carbonate in 15 ml of dimethylacetamide. The suspension is heated to 85° C., and a solution of 3.6 g (0.013 mol) of 1-(4-chlorophenyl)-2-methyl-2-morpholin-4-yl-propan-1-one in 20 ml of dimethylacetamide is added dropwise over 20 min. After stirring for 18 h, the reaction mixture is cooled, diluted with ethyl acetate (60 ml), and filtered. The filtrate is washed with water (3×50 ml), dried over MgSO4, and concentrated i.v. (85° C./5 mm Hg). The resulting oil is purified by flash chromatography on silica gel (hexane/ethyl acetate 85:15) to a pale yellow oil which crystallizes to a colorless solid upon standing. m.p. 61-64° C. The structure is confirmed by the 1H-NMR spectrum (CDCl3): δ [ppm] 1.31 (s, 6H), 1.35 (t, SH), 1.4-1.8 (m, 8H), 2.53 (q, 2H), 2.57 (t, 4H), 3.00 (t, 2H), 3.69 (t, 4H), 7.24 (d, 2H), 8.50 (d, 2H). the reaction mixture is cooled filtered The filtrate is washed with water (3×50 ml) dried over MgSO4 concentrated i.v (85° C./5 mm Hg) The resulting oil is purified by flash chromatography on silica gel (hexane/ethyl acetate 85:15) to a pale yellow oil which crystallizes to a colorless solid