thiane-4-carbonitrile

Conditions: temp:-78.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of tetrahydro-2H-thiopyran-4-carbonitrile (197 mg, 1.55 mmol) and THF (2.0 mL) is slowly added via syringe to a mixture of KHMDS (324 mg, 1.63 mmol) in THF (3.0 mL), stirring at −78° C. under nitrogen. The temperature is maintained at −78° C. for 30 min. before a mixture of 4-fluoro-2-methylbenzonitrile (222 mg, 1.64 mmol) in THF (1.0 mL) is slowly added to the vessel. The mixture is allowed to warm to room temperature and is stirred for 3 hours before being quenched with saturated aqueous NH4Cl. The solvent is removed by rotary evaporator and EtOAc (10.0 mL) and water (10.0 mL) are added. The phases are partitioned and the organic is washed with brine, dried with Na2SO4 and concentrated to yield the product (252 mg, 1.04 mmol, 67%). 1H NMR (400 MHz, DMSO-D6) δ ppm 1.84-1.95 (m, 2H), 2.03-2.14 (m, 2H), 2.51 (s, 3H), 2.57-2.72 (m, 4H), 7.23-7.31 (m, 1H), 7.41 (dd, J=9.96, 1.76 Hz, 1H), 7.89 (dd, J=8.59, 5.86 Hz, 1H). is slowly added to the vessel to warm to room temperature is stirred for 3 hours before being quenched with saturated aqueous NH4Cl The solvent is removed by rotary evaporator and EtOAc (10.0 mL) and water (10.0 mL) are added The phases are partitioned the organic is washed with brine dried with Na2SO4 concentrated

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

Procedure: A solution of 1.97 g (15.5 mmol) of tetrahydro-thiopyran-4-carbonitrile in 5 mL of ethanol (EtOH) was added to a solution of 6.2 g (155 mmol) of sodium hydroxide (NaOH) in 30 mL of EtOH and 15 mL of water, and the resulting mixture was heated at reflux for 4 h. The reaction mixture was cooled in an ice bath, acidified with concentrated hydrochloric acid to pH=2, and then concentrated to give a precipitate which was filtered to afford 1.36 g (60%) of desired tetrahydro-thiopyran-4-carboxylic acid as a brown crystalline solid as indicated by 1H NMR. the resulting mixture was heated at reflux for 4 h The reaction mixture was cooled in an ice bath concentrated to give a precipitate which was filtered

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

Procedure: A solution of 1.97 g (15.5 mmol) of tetrahydro-thiopyran-4-carbonitrile in 5 mL of ethanol (EtOH) was added to a solution of 6.2 g (155 mmol) of sodium hydroxide (NaOH) in 30 mL of EtOH and 15 mL of water, and the resulting mixture was heated at reflux for 4 h. The reaction mixture was cooled in an ice bath, acidified with concentrated hydrochloric acid to pH=2, and then concentrated to give a precipitate which was filtered to afford 1.36 g (60%) of desired tetrahydro-thiopyran-4-carboxylic acid as a brown crystalline solid as indicated by 1H NMR. the resulting mixture was heated at reflux for 4 h The reaction mixture was cooled in an ice bath concentrated to give a precipitate which was filtered

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

Procedure: Tetrahydro-2H-thiopyran-4-carbonitrile (2.6 g, 20.5 mmol) and CuI (195 mg, 1 mmol) were diluted in dry THF (200 ml). A 1M solution of phenyl magnesium bromide in THF (41 ml, 41 mmol) was added and the mixture was heated at reflux for 16 hours. After cooling at room temperature, ether was added and the imine was hydrolyzed with a 1 N HCl solution for 10 minutes. The organic phase was separated and treated with a 0.1 N HCl solution for 10 minutes. The organic phase was separated and washed with brine, dried over MgSO4 and evaporated in vacuum. After chromatography on silica gel (CH2Cl2/hexane 30/70), the phenyl(tetrahydro-2H-thiopyran-4-yl)methanone 17 was obtained as a white solid (3 g, 70%). the mixture was heated at reflux for 16 hours The organic phase was separated treated with a 0.1 N HCl solution for 10 minutes The organic phase was separated washed with brine dried over MgSO4 evaporated in vacuum

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

Procedure: Tetrahydro-2H-thiopyran-4-carbonitrile (2.6 g, 20.5 mmol) and CuI (195 mg, 1 mmol) were diluted in dry THF (200 ml). A 1M solution of phenyl magnesium bromide in THF (41 ml, 41 mmol) was added and the mixture was heated at reflux for 16 hours. After cooling at room temperature, ether was added and the imine was hydrolyzed with a 1 N HCl solution for 10 minutes. The organic phase was separated and treated with a 0.1 N HCl solution for 10 minutes. The organic phase was separated and washed with brine, dried over MgSO4 and evaporated in vacuum. After chromatography on silica gel (CH2Cl2/hexane 30/70), the phenyl(tetrahydro-2H-thiopyran-4-yl)methanone 17 was obtained as a white solid (3 g, 70%). the mixture was heated at reflux for 16 hours The organic phase was separated treated with a 0.1 N HCl solution for 10 minutes The organic phase was separated washed with brine dried over MgSO4 evaporated in vacuum

Conditions: temp:-78.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of tetrahydro-2H-thiopyran-4-carbonitrile (197 mg, 1.55 mmol) and THF (2.0 mL) is slowly added via syringe to a mixture of KHMDS (324 mg, 1.63 mmol) in THF (3.0 mL), stirring at −78° C. under nitrogen. The temperature is maintained at −78° C. for 30 min. before a mixture of 4-fluoro-2-methylbenzonitrile (222 mg, 1.64 mmol) in THF (1.0 mL) is slowly added to the vessel. The mixture is allowed to warm to room temperature and is stirred for 3 hours before being quenched with saturated aqueous NH4Cl. The solvent is removed by rotary evaporator and EtOAc (10.0 mL) and water (10.0 mL) are added. The phases are partitioned and the organic is washed with brine, dried with Na2SO4 and concentrated to yield the product (252 mg, 1.04 mmol, 67%). 1H NMR (400 MHz, DMSO-D6) δ ppm 1.84-1.95 (m, 2H), 2.03-2.14 (m, 2H), 2.51 (s, 3H), 2.57-2.72 (m, 4H), 7.23-7.31 (m, 1H), 7.41 (dd, J=9.96, 1.76 Hz, 1H), 7.89 (dd, J=8.59, 5.86 Hz, 1H). is slowly added to the vessel to warm to room temperature is stirred for 3 hours before being quenched with saturated aqueous NH4Cl The solvent is removed by rotary evaporator and EtOAc (10.0 mL) and water (10.0 mL) are added The phases are partitioned the organic is washed with brine dried with Na2SO4 concentrated

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

Procedure: A solution of 1.97 g (15.5 mmol) of tetrahydro-thiopyran-4-carbonitrile in 5 mL of ethanol (EtOH) was added to a solution of 6.2 g (155 mmol) of sodium hydroxide (NaOH) in 30 mL of EtOH and 15 mL of water, and the resulting mixture was heated at reflux for 4 h. The reaction mixture was cooled in an ice bath, acidified with concentrated hydrochloric acid to pH=2, and then concentrated to give a precipitate which was filtered to afford 1.36 g (60%) of desired tetrahydro-thiopyran-4-carboxylic acid as a brown crystalline solid as indicated by 1H NMR. the resulting mixture was heated at reflux for 4 h The reaction mixture was cooled in an ice bath concentrated to give a precipitate which was filtered

Conditions: temp:-78.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of tetrahydro-2H-thiopyran-4-carbonitrile (197 mg, 1.55 mmol) and THF (2.0 mL) is slowly added via syringe to a mixture of KHMDS (324 mg, 1.63 mmol) in THF (3.0 mL), stirring at −78° C. under nitrogen. The temperature is maintained at −78° C. for 30 min. before a mixture of 4-fluoro-2-methylbenzonitrile (222 mg, 1.64 mmol) in THF (1.0 mL) is slowly added to the vessel. The mixture is allowed to warm to room temperature and is stirred for 3 hours before being quenched with saturated aqueous NH4Cl. The solvent is removed by rotary evaporator and EtOAc (10.0 mL) and water (10.0 mL) are added. The phases are partitioned and the organic is washed with brine, dried with Na2SO4 and concentrated to yield the product (252 mg, 1.04 mmol, 67%). 1H NMR (400 MHz, DMSO-D6) δ ppm 1.84-1.95 (m, 2H), 2.03-2.14 (m, 2H), 2.51 (s, 3H), 2.57-2.72 (m, 4H), 7.23-7.31 (m, 1H), 7.41 (dd, J=9.96, 1.76 Hz, 1H), 7.89 (dd, J=8.59, 5.86 Hz, 1H). is slowly added to the vessel to warm to room temperature is stirred for 3 hours before being quenched with saturated aqueous NH4Cl The solvent is removed by rotary evaporator and EtOAc (10.0 mL) and water (10.0 mL) are added The phases are partitioned the organic is washed with brine dried with Na2SO4 concentrated

Conditions: temp:-78.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of tetrahydro-2H-thiopyran-4-carbonitrile (197 mg, 1.55 mmol) and THF (2.0 mL) is slowly added via syringe to a mixture of KHMDS (324 mg, 1.63 mmol) in THF (3.0 mL), stirring at −78° C. under nitrogen. The temperature is maintained at −78° C. for 30 min. before a mixture of 4-fluoro-2-methylbenzonitrile (222 mg, 1.64 mmol) in THF (1.0 mL) is slowly added to the vessel. The mixture is allowed to warm to room temperature and is stirred for 3 hours before being quenched with saturated aqueous NH4Cl. The solvent is removed by rotary evaporator and EtOAc (10.0 mL) and water (10.0 mL) are added. The phases are partitioned and the organic is washed with brine, dried with Na2SO4 and concentrated to yield the product (252 mg, 1.04 mmol, 67%). 1H NMR (400 MHz, DMSO-D6) δ ppm 1.84-1.95 (m, 2H), 2.03-2.14 (m, 2H), 2.51 (s, 3H), 2.57-2.72 (m, 4H), 7.23-7.31 (m, 1H), 7.41 (dd, J=9.96, 1.76 Hz, 1H), 7.89 (dd, J=8.59, 5.86 Hz, 1H). is slowly added to the vessel to warm to room temperature is stirred for 3 hours before being quenched with saturated aqueous NH4Cl The solvent is removed by rotary evaporator and EtOAc (10.0 mL) and water (10.0 mL) are added The phases are partitioned the organic is washed with brine dried with Na2SO4 concentrated

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

Procedure: A solution of 1.97 g (15.5 mmol) of tetrahydro-thiopyran-4-carbonitrile in 5 mL of ethanol (EtOH) was added to a solution of 6.2 g (155 mmol) of sodium hydroxide (NaOH) in 30 mL of EtOH and 15 mL of water, and the resulting mixture was heated at reflux for 4 h. The reaction mixture was cooled in an ice bath, acidified with concentrated hydrochloric acid to pH=2, and then concentrated to give a precipitate which was filtered to afford 1.36 g (60%) of desired tetrahydro-thiopyran-4-carboxylic acid as a brown crystalline solid as indicated by 1H NMR. the resulting mixture was heated at reflux for 4 h The reaction mixture was cooled in an ice bath concentrated to give a precipitate which was filtered

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

Procedure: A chloroform solution of tetrahydro-2H-thiopyran-4-carbonitrile was dropwise added to a chloroform solution of 77% m-chloroperbenzoic acid at 0° C., followed by stirring at room temperature for 3 hours. An excess amount of an aqueous saturated sodium sulfite solution was added, followed by work-up to obtain tetrahydro-2H-thiopyran-4-carbonitrile 1,1-dioxide.

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

Procedure: A chloroform solution of tetrahydro-2H-thiopyran-4-carbonitrile was dropwise added to a chloroform solution of 77% m-chloroperbenzoic acid at 0° C., followed by stirring at room temperature for 3 hours. An excess amount of an aqueous saturated sodium sulfite solution was added, followed by work-up to obtain tetrahydro-2H-thiopyran-4-carbonitrile 1,1-dioxide.