sodium;2-methylpropane-2-thiolate

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

Procedure: To a solution of (5-({[4-(methoxy)phenyl]methyl}oxy)-4-{[(trifluoromethyl)sulfonyl]oxy}-2-pyridinyl)methyl acetate (10 g, 23 mmol) in anhydrous toluene, (R)-(+)-2,2 bis(diphenylphosphino)-1,1-binaphthyl (312 mg, 0.4 mmol) was added. The reaction mixture was degassed before adding palladium acetate (103 mg, 0.4 mmol). Sodium 2-methyl-2-propanethiolate was added, the system degassed again and the reaction mixture was stirred at 60° C. for 3 hours, under argon atmosphere then at 70 oC for a further 18 hours. The reaction mixture was filtered and the filtrate was evaporated under vacuum. The residue was partitioned between ethyl acetate and water. The aqueous layer was extracted several times with ethyl acetate. The combined organic extracts were dried over magnesium sulfate and evaporated under vacuum. The residue was chromatographed on silica gel eluting with 20-35% ethyl acetate in hexane to afford the product as an oil (9.1 g, 100%); MS (+ve ion electrospray) m/z 376 (MH+). The reaction mixture was degassed the system degassed again at 70 oC for a further 18 hours The reaction mixture was filtered the filtrate was evaporated under vacuum The residue was partitioned between ethyl acetate and water The aqueous layer was extracted several times with ethyl acetate The combined organic extracts were dried over magnesium sulfate evaporated under vacuum The residue was chromatographed on silica gel eluting with 20-35% ethyl acetate in hexane

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

Procedure: To a solution of (5-({[4-(methoxy)phenyl]methyl}oxy)-4-{[(trifluoromethyl)sulfonyl]oxy}-2-pyridinyl)methyl acetate (10 g, 23 mmol) in anhydrous toluene, (R)-(+)-2,2 bis(diphenylphosphino)-1,1-binaphthyl (312 mg, 0.4 mmol) was added. The reaction mixture was degassed before adding palladium acetate (103 mg, 0.4 mmol). Sodium 2-methyl-2-propanethiolate was added, the system degassed again and the reaction mixture was stirred at 60° C. for 3 hours, under argon atmosphere then at 70 oC for a further 18 hours. The reaction mixture was filtered and the filtrate was evaporated under vacuum. The residue was partitioned between ethyl acetate and water. The aqueous layer was extracted several times with ethyl acetate. The combined organic extracts were dried over magnesium sulfate and evaporated under vacuum. The residue was chromatographed on silica gel eluting with 20-35% ethyl acetate in hexane to afford the product as an oil (9.1 g, 100%); MS (+ve ion electrospray) m/z 376 (MH+). The reaction mixture was degassed the system degassed again at 70 oC for a further 18 hours The reaction mixture was filtered the filtrate was evaporated under vacuum The residue was partitioned between ethyl acetate and water The aqueous layer was extracted several times with ethyl acetate The combined organic extracts were dried over magnesium sulfate evaporated under vacuum The residue was chromatographed on silica gel eluting with 20-35% ethyl acetate in hexane

Conditions: temp:160.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a mixture of methyl(4-chloro-7-fluoro-6-methoxy-1-benzothiophen-3-yl)acetate (284.8 mg) and DMF (dry) (8.0 mL) was added sodium 2-methyl-2-propanethiolate (443 mg). The mixture was stirred at 160° C. for 45 min. After cooling, the mixture was diluted with water and 1N HCl and extracted with EtOAc. The organic layer was washed successively with water and brine, dried over MgSO4, filtered and concentrated in vacuo. The residue was dissolved in MeOH (6.0 mL). To the solution was added conc. H2SO4 (0.100 mL). The mixture was stirred at 70° C. for 1 h. The mixture was concentrated. The residue was neutralized with saturated aqueous NaHCO3, and the mixture was extracted with EtOAc. The combined organic layer was washed with brine, dried over MgSO4, filtered and concentrated in vacuo. The residual solid was washed with toluene and hexane to give the title compound (229.3 mg). After cooling extracted with EtOAc The organic layer was washed successively with water and brine dried over MgSO4 filtered concentrated in vacuo The residue was dissolved in MeOH (6.0 mL) To the solution was added conc. H2SO4 (0.100 mL) The mixture was stirred at 70° C. for 1 h The mixture was concentrated the mixture was extracted with EtOAc The combined organic layer was washed with brine dried over MgSO4 filtered concentrated in vacuo The residual solid was washed with toluene and hexane

Conditions: temp:160.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a mixture of methyl(7-fluoro-6-methoxy-4-methyl-1-benzothiophen-3-yl)acetate (248.4 mg) and DMF (dry) (7.5 mL) was added sodium 2-methyl-2-propanethiolate (415 mg) at room temperature. The mixture was stirred at 160° C. for 20 min. After cooling, the mixture was diluted with water and 1N HCl and extracted with EtOAc. The organic layer was washed successively with water and brine, dried over MgSO4, and concentrated in vacuo to give the title compound (273 mg). After cooling extracted with EtOAc The organic layer was washed successively with water and brine dried over MgSO4 concentrated in vacuo

Conditions: temp:160.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a mixture of methyl(7-fluoro-6-methoxy-4-methyl-1-benzothiophen-3-yl)acetate (248.4 mg) and DMF (dry) (7.5 mL) was added sodium 2-methyl-2-propanethiolate (415 mg) at room temperature. The mixture was stirred at 160° C. for 20 min. After cooling, the mixture was diluted with water and 1N HCl and extracted with EtOAc. The organic layer was washed successively with water and brine, dried over MgSO4, and concentrated in vacuo to give the title compound (273 mg). After cooling extracted with EtOAc The organic layer was washed successively with water and brine dried over MgSO4 concentrated in vacuo

Conditions: temp:160.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of methyl(4,7-dichloro-6-methoxy-1-benzothiophen-3-yl)acetate (300.9 mg), DMF (dry) (9.0 mL) and sodium 2-methyl-2-propanethiolate (442 mg) was stirred at 160° C. for 20 min. The mixture was quenched with water and 1N HCl and extracted with EtOAc. The organic layer was washed successively with water and brine, dried over MgSO4, and concentrated in vacuo to give (4,7-dichloro-6-hydroxy-1-benzothiophen-3-yl)acetic acid (327 mg) as a crude mixture. A crude mixture of (4,7-dichloro-6-hydroxy-1-benzothiophen-3-yl)acetic acid (369 mg) was dissolved in MeOH (10 mL). To the solution was added conc. H2SO4 (0.100 mL). The mixture was stirred at 80° C. for 40 min. The mixture was concentrated. The residue was neutralized with saturated aqueous NaHCO3 and extracted with EtOAc. The organic layer was washed with brine, dried over MgSO4, and concentrated in vacuo. The solid was washed with hexane to give the title compound (345 mg). The mixture was quenched with water and 1N HCl extracted with EtOAc The organic layer was washed successively with water and brine dried over MgSO4 concentrated in vacuo

Conditions: temp:160.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 4-chlorophthalazin-1(2H)-one (200 mg, 1.11 mmol), sodium 2-methylpropane-2-thiolate (248 mg, 2.22 mmol), tris(trifluoromethylsulfonyloxy)scandium (54.5 mg, 0.11 mmol) and K2CO3 (308 mg, 2.22 mmol) was heated at 160° C. under microwave condition for 30 minutes. The mixture was diluted with EtOAc and washed with saturated aqueous NaHCO3, dried (Na2SO4), filtered, and chromatographed (0-30% EtOAc/DCM) to give 52 mg (20%) of the title compound as a white solid: MS (DCI) 235 (M+H). washed with saturated aqueous NaHCO3 dried (Na2SO4) filtered chromatographed (0-30% EtOAc/DCM)

Conditions: temp:160.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 4-chlorophthalazin-1(2H)-one (200 mg, 1.11 mmol), sodium 2-methylpropane-2-thiolate (248 mg, 2.22 mmol), tris(trifluoromethylsulfonyloxy)scandium (54.5 mg, 0.11 mmol) and K2CO3 (308 mg, 2.22 mmol) was heated at 160° C. under microwave condition for 30 minutes. The mixture was diluted with EtOAc and washed with saturated aqueous NaHCO3, dried (Na2SO4), filtered, and chromatographed (0-30% EtOAc/DCM) to give 52 mg (20%) of the title compound as a white solid: MS (DCI) 235 (M+H). washed with saturated aqueous NaHCO3 dried (Na2SO4) filtered chromatographed (0-30% EtOAc/DCM)

Conditions: temp:150.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 4-Hydroxy-2-(4-iodo-phenyl)-2H-phthalazin-1-one (see Method Q) (0.30 g, 0.8 mmol), sodium 2-methyl-propane-2-thiolate (0.094 g, 0.8 mmol), CuI (0.011 g, 0.06 mmol) and ethylene glycol (0.10 g, 1.6 mmol) were dissolved in N-methyl-pyrrolidinone (NMP) (0.5 ml) under argon and heated to 150° C. Stirring at this temperature was continued for 4 d before the mixture was allowed to warm to RT. H2O (50 ml) was added and the precipitated solid was collected by filtration. The title compound was obtained after purification of the raw product by chromatography over silica gel with DCM (0.21 g, 78%). 1H-NMR: (400 MHz, D6-DMSO) 12.35 (1H, s), 8.73 (1H, d), 8.33-8.41 (3H, m), 8.14 (2H, d), 8.01 (2H, d), 1.70 (9H, s); MS (ESI+)=327.14 (M+H)+. to warm to RT the precipitated solid was collected by filtration

Conditions: temp:150.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 4-Hydroxy-2-(4-iodophenyl)-2H-phthalazin-1-one (see Method Q) (0.30 g, 0.8 mmol), sodium 2-methyl-propane-2-thiolate (0.094 g, 0.8 mmol), CuI (0.011 g, 0.06 mmol) and ethylene glycol (0.10 g, 1.6 mmol) were dissolved in N-methyl-pyrrolidinone (NMP) (0.5 ml) under argon and heated to 150° C. Stirring at this temperature was continued for 4 d before the mixture was allowed to warm to room temperature. H2O (50 ml) was added and the precipitated solid was collected by filtration. The title compound was obtained after purification of the raw product by chromatography over silica gel with dichloromethane (0.21 g, 78%). 1H-NMR: (400 MHz, D6-DMSO) 12.35 (1H, s), 8.73 (1H, d), 8.33–8.41 (3H, m), 8.14 (2H, d), 8.01 (2H, d), 1.70 (9H, s); MS (ESI+)=327.14 (M+H)+. to warm to room temperature the precipitated solid was collected by filtration

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

Procedure: To a stirred solution of Intermediate 1d (4 mmol) in DMF (25 mL) at rt was added sodium 2-methyl-2-propanethiolate (2 g, 20 mmol). The resultant suspension was stirred at rt for 18 hr then poured into water (75 mL) and extracted with EtOAc (2×75 mL). The combined organic extracts were washed with brine, dried over Na2SO4 and concentrated. Chromatography over silica eluting with 5:95 EtOAc/hexane furnished the N-protected product as a clear colourless oil. The N-Boc-protected sulfide was dissolved in CH2Cl2 (120 mL) and TFA (30 mL) was added. The resultant solution was stirred at rt for 1 hr. Volatiles were removed in vacuo to furnish the title compound as a clear colourless gum (1.34 g, 3.8 mmol). ESI-MS calcd for C15H29NS: 255; found 297 (M+H+MeCN). extracted with EtOAc (2×75 mL) The combined organic extracts were washed with brine dried over Na2SO4 concentrated Chromatography over silica eluting with 5:95 EtOAc/hexane furnished the N-protected product as a clear colourless oil Volatiles were removed in vacuo

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A suspension of sodium 2-methylpropane-2-thiolate (188 mg, 1.68 mmol) in DMF was treated with 2,6-dichloropyridine (4865 μl, 1.46 mmol) at ambient temperature in a vial. The vial was capped and heated to 80° C. with rapid stirring of the colorless solution. After 12 hours, the reaction was cooled to ambient temperature and diluted with ethyl acetate. The ethyl acetate solution was washed with brine solution, dried with sodium sulfate, filtered, concentrated and purified on silica gel. Elution with 2% to 10% ethyl acetate/hexanes provided the title compound (271 mg, 1.34 mmol, 92.0% yield) as a light yellow oil. The vial was capped the reaction was cooled to ambient temperature The ethyl acetate solution was washed with brine solution dried with sodium sulfate filtered concentrated purified on silica gel Elution with 2% to 10% ethyl acetate/hexanes