1,1-dimethylthiourea

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:; See reaction.notes.procedure_details.

Procedure: A mixture of 7.26 g of the compound obtained in step B) and 2.08 g of the compound obtained in step A) in 150 ml of EtOH is refluxed for 1 hour 30 minutes. After cooling to RT, the mixture is concentrated under vacuum, the residue is taken up with water, rendered alkaline to pH 10 by the addition of 10% NaOH solution and extracted with DCM, the organic phase is washed with 10% NaOH solution and with saturated NaCl solution and dried over MgSO4 and the solvent is evaporated off under vacuum. The product obtained is dissolved in acetone, a solution of 3.31 g of p-toluenesulfonic acid monohydrate in 10 ml of acetone is added dropwise and the crystalline product formed is wrung to give 6.1 g of the expected product. M.p.=164° C. is refluxed for 1 hour 30 minutes the mixture is concentrated under vacuum by the addition of 10% NaOH solution extracted with DCM the organic phase is washed with 10% NaOH solution and with saturated NaCl solution dried over MgSO4 the solvent is evaporated off under vacuum The product obtained the crystalline product formed

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

Procedure: A mixture of 2-dimethylaminoethanol (2.23 g), N,N1 -dimethylthiourea (2.6 g) and aqueous hydrobromic acid (48%, 20 ml) was boiled under reflux for 50 hours and evaporated to dryness. The residue was recrystallised from a mixture of methanol and ethanol to give the dihydrobromide of the title compound (5.6 g) m.p. 198°-199°. under reflux for 50 hours evaporated to dryness The residue was recrystallised from a mixture of methanol and ethanol

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

Procedure: A mixture of 3-dimethylaminopropanol (10.3 g), N,N1 -dimethylthiourea (10.4 g) and aqueous hydrobromic acid (48%, 60 ml) was boiled under reflux for 18 hours and evaporated to dryness. The residue was recrystallised from ethanol to give the dihydrobromide of the title compound m.p. 173°-174°. under reflux for 18 hours evaporated to dryness The residue was recrystallised from ethanol

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

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

Procedure: To N-{3-[(Z)-2-(2-chloro-4-pyrimidinyl)-1-hydroxyethenyl]phenyl}-2,6-difluorobenzenesulfonamide (2.0 g, 4.72 mmol) in 25 mL DMA was added NBS (0.88 g, 4.95 mmol). The mixture stirred at rt for 30 min. N,N-Dimethylthiourea (0.6 g, 5.66 mmol) was added and the mixture heated to 40° C. overnight. The mixture was poured into 300 mL ice water and the crude product was collected by filtration. The crude product was then purified by flash chromatography to give the title compound of Step A (0.6 g, 1.18 mmol, 25% yield). 1H NMR (400 MHz, DMSO-d6) δ ppm 11.09 (s, 1H), 8.14 (d, J=5.5 Hz, 1H), 7.68 (s, 2H), 7.37 (d, J=7.9 Hz, 1H), 7.22 (ddd, J=17.3, 8.5, 8.2 Hz, 5H), 6.47 (d, J=5.5 Hz, 1H), 3.12 (s, 6H). the mixture heated to 40° C. overnight the crude product was collected by filtration The crude product was then purified by flash chromatography

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

Procedure: A mixture of 15 g (144 mmol) of N,N-dimethylthiourea and excess MgSO4 in 350 ml of acetone was heated to reflux and treated dropwise with a solution of 18.3 g (144 mmol) of 1,3-dichloroacetone in 35 ml of acetone. The resulting mixture was heated at reflux for 1.5 h, allowed to cool, filtered, and concentrated in vacuo. The residue was purified by silica gel chromatography using 20% ethyl acetate in hexane to provide 14.0 g (70%) of the desired compound. was heated to reflux The resulting mixture was heated at reflux for 1.5 h to cool filtered concentrated in vacuo The residue was purified by silica gel chromatography

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

Procedure: A mixture of 15 g (144 mmol) of N,N-dimethylthiourea and excess MgSO4 in 350 ml of acetone was heated to reflux and treated dropwise with a solution of 18.3 g (144 mmol) of 1,3-dichloroacetone in 35 ml of acetone. The resulting mixture was heated at reflux for 1.5 h, allowed to cool, filtered, and concentrated in vacuo. The residue was purified by silica gel chromatography using 20% ethyl acetate in hexane to provide 14.0 g (70%) of the desired compound. was heated to reflux The resulting mixture was heated at reflux for 1.5 h to cool filtered concentrated in vacuo The residue was purified by silica gel chromatography

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

Procedure: A mixture of 7.26 g of the compound obtained in step B) and 2.08 g of the compound obtained in step A) in 150 ml of EtOH is refluxed for 1 hour 30 minutes. After cooling to RT, the mixture is concentrated under vacuum, the residue is taken up with water, rendered alkaline to pH 10 by the addition of 10% NaOH solution and extracted with DCM, the organic phase is washed with 10% NaOH solution and with saturated NaCl solution and dried over MgSO4 and the solvent is evaporated off under vacuum. The product obtained is dissolved in acetone, a solution of 3.31 g of p-toluenesulfonic acid monohydrate in 10 ml of acetone is added dropwise and the crystalline product formed is wrung to give 6.1 g of the expected product. M.p.=164° C. is refluxed for 1 hour 30 minutes the mixture is concentrated under vacuum by the addition of 10% NaOH solution extracted with DCM the organic phase is washed with 10% NaOH solution and with saturated NaCl solution dried over MgSO4 the solvent is evaporated off under vacuum The product obtained the crystalline product formed

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

Procedure: A mixture of 15 g (144 mmol) of N,N-dimethylthiourea and excess MgSO4 in 350 ml of acetone was heated to reflux and treated dropwise with a solution of 18.3 g (144 mmol) of 1,3-dichloroacetone in 35 ml of acetone. The resulting mixture was heated at reflux for 1.5 h, allowed to cool, filtered, and concentrated in vacuo. The residue was purified by silica gel chromatography using 20% ethyl acetate in hexane to provide 14.0 g (70%) of the desired compound. was heated to reflux The resulting mixture was heated at reflux for 1.5 h to cool filtered concentrated in vacuo The residue was purified by silica gel chromatography