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CAS No. : | 777-44-6 | MDL No. : | MFCD00014724 |
Formula : | C7H4ClF3O2S | Boiling Point : | No data available |
Linear Structure Formula : | - | InChI Key : | ONCAZCNPWWQQMW-UHFFFAOYSA-N |
M.W : | 244.62 | Pubchem ID : | 2733250 |
Synonyms : |
|
Signal Word: | Danger | Class: | 8 |
Precautionary Statements: | P260-P280-P303+P361+P353-P301+P330+P331-P304+P340+P310-P305+P351+P338+P310 | UN#: | 3265 |
Hazard Statements: | H314 | Packing Group: | Ⅱ |
GHS Pictogram: |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With triethylamine; In dichloromethane; at 20 - 37℃; for 48.0h; | EXAMPLE 1; N-Isopropyl-N-piperidin-4-yl-3 -trifluoromethylbenzenesulfonamide (6); [0480] NaB(OAc)3H (14 g, 66 mmol, Aldrich) was added to a mixture of compound 1 (10 g, 50 mmol, Aldrich), compound 2 (3 g, 52.5 mmol, Aldrich), molecular sieves (4A beads, 2Og, Aldrich) in DCE (200 mL) at 0 0C. The resulting mixture was stirred at room temperature for 24 hours. The reaction mixture was quenched with MeOH (2mL), filtered over celite, washed with water, 2N NaOH and concentrated under vacuum to afford crude compound 3 as a colorless oil. Compound 4 (12 g, 49 mmol, Aldrich) was added to a mixture of the above crude compound 3, TEA (10 mL) and DCM (10 mL) at room temperature. The resulting mixture was heated and stirred at 37 0C for 2 days. The reaction mixture was then cooled to room temperature, washed with water (10 mL), brine, concentrated and purified by column (silica gel, EtOAc/hexanes 3/7) to obtain compound 5 as a sticky oil (10 g, yield 45% in two steps), which was dissolved in 100 mL of 1,4-dioxane. HCl (10 mL, concentrated aq.) was added to the 1,4-dioxane solution at room temperature. The resulting mixture was stirred at room temperature for 48 hours, and concentrated under vacuum. The residue was washed with ethyl ether, and dried to obtain the title compound 6 as HCl-salt, which was suspended in EtOAc, and neutralized with IN <n="152"/>NaOH aq, concentrated and dried under vacuum to give compound 6 as colorless oil (5 g, yield 65%). | |
With triethylamine; In dichloromethane; at 37℃; for 48.0h; | Example 1; N-Isopropyl-N-piperidin-4-yl-3-trifluoromethyl-benzenesulfonamide (6); NaB(OAc)3H (14 g, 66 mmol, Aldrich) was added to a mixture of compound 1 (10 g, 50 mmol, Aldrich), compound 2 (3 g, 52.5 mmol, Aldrich), molecular sieves (4 beads, 20 g, Aldrich) in DCE (200 mL) at 0 C. The resulting mixture was stirred at room temperature for 24 hours. The reaction mixture was quenched with MeOH (2 mL), filtered over celite, washed with water, 2N NaOH and concentrated under vacuum to afford crude compound 3 as a colorless oil. Compound 4 (12 g, 49 mmol, Aldrich) was added to a mixture of the above crude compound 3, TEA (10 mL) and DCM (10 mL) at room temperature. The resulting mixture was heated and stirred at 37 C. for 2 days. The reaction mixture was then cooled to room temperature, washed with water (10 mL), brine, concentrated and purified by column (silica gel, EtOAc/hexanes 3/7) to obtain compound 5 as a sticky oil (10 g, yield 45% in two steps), which was dissolved in 100 mL of 1,4-dioxane. HCl (10 mL, concentrated aq.) was added to the 1,4-dioxane solution at room temperature. The resulting mixture was stirred at room temperature for 48 hours, and concentrated under vacuum. The residue was washed with ethyl ether, and dried to obtain the title compound 6 as HCl-salt, which was suspended in EtOAc, and neutralized with 1N NaOH aq, concentrated and dried under vacuum to give compound 6 as colorless oil (5 g, yield 65%). | |
With triethylamine; In dichloromethane; at 20 - 37℃; for 48.0h; | EXAMPLE 10; N-Isopropyl-N-piperidin-4-yl-3-trifluoromethylbenzenesulfonamide (19); [0258] NaB(OAc)3H (14 g, 66 mmol, Aldrich) was added to a mixture of compound 14 (10 g, 50 mmol, Aldrich), compound 15 (3 g, 52.5 mmol, Aldrich), molecular sieves (4A beads, 2Og, Aldrich) in DCE (200 ml) at 0 0C. The resulting mixture was stirred at room temperature for 24 hours. The reaction mixture was quenched with MeOH (2ml), filtered over celite, washed with water, 2N NaOH and concentrated under vacuum to afford crude compound 16 as a colorless oil. Compound 17 (12 g, 49 mmol, Aldrich) was added to a mixture of the above crude compound 16, TEA (10 ml) and DCM (10 ml) at room temperature. The resulting mixture was heated and stirred at 37 0C for 2 days. The reaction mixture was then cooled to room temperature, washed with water (10 ml), brine, concentrated and purified by column (silica gel, EtOAc/hexanes 3/7) to obtain compound 18 as a sticky oil (10 g, yield 45% in two steps), which was dissolved in 100 ml of 1,4-dioxane. HCl (10 ml, concentrated aq.) was added to the 1,4-dioxane solution at room temperature. The resulting mixture was stirred at room temperature for 48 hours, and concentrated under vacuum. The residue was washed with ethyl ether, and dried to obtain the title compound 19 as HCl-salt, which was suspended in EtOAc, and neutralized with IN <n="87"/>NaOH aq, concentrated and dried under vacuum to give compound 19 as colorless oil (5 g, yield 65%). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
71% | With potassium hydroxide; In tetrahydrofuran; water; at 0 - 20℃;Cooling with ice; | Synthesis of the Acid Unit AC-13: 4-[Methyl-[[3-(trifluoromethyl)phenyl]sulfonyl]-amino]-butyric acid (AC-13) 4-(Methylamino)butanoic acid hydrochloride (10, 15.1 g, 98.1 mmol) was added to a solution of KOH (16.5 g, 294 mmol) in H2O (75 ml) and the reaction mixture was cooled in an ice bath. A solution of 3-(trifluoromethyl)benzenesulfonyl chloride (9, 12.0 g, 49.1 mmol) in THF (75 ml) was added dropwise to the reaction mixture and the mixture was stirred at room temperature overnight. Aqueous 6 M HCl (75 ml) was added, while cooling with an ice bath, and the addition of CH2Cl2 then followed. The organic phase was separated, washed with sat. NaCl solution, dried over Na2SO4 and concentrated and the residue was co-evaporated with a minimal amount of diethyl ether. Recrystallization of the residue from ethyl acetate/heptane gave AC-13 (11.32 g, 71percent). |
71% | Synthesis of Acid Building Block S-13; 4-[Methyl-[[3-(trifluoromethyl)phenyl]sulfonyl]-amino]-butyric acid (S-13) To a solution of KOH (16.5 g, 294 mmol) in H2O (75 ml) was added <strong>[6976-17-6]4-(methylamino)butyric acid hydrochloride</strong> (10, 15.1 g, 98.1 mmol) and the reaction mixture was cooled with an icebath. A solution of 3-(trifluoromethyl)benzene-sulfonyl chloride (9, 12.0 g, 49.1 mmol) in THF (75 ml) was dropwise added to the reaction mixture and stirring was continued at room temperature overnight. Aqueous 6 M HCl (75 ml) was added to the reaction mixture while cooling with an icebath, after which CH2Cl2 was added. The organic layer was separated, washed with brine, dried (Na2SO4), concentrated and co-evaporated with a minimal amount of Et2O. Crystallization of the residue out of EtOAc/heptane resulted in S-13 (11.32 g, 71percent). | |
71% | To a solution of KOH (16.5 g, 294 mmol) in H2O (75 mL) was added 4- (methylamino)butyric acid hydrochloride (10, 15.1 g, 98.1 mmol) and the reaction mixture was cooled with an icebath. A solution of 3-(trifluoromethyl)benzenesulphonyl chloride (9, 12.0 g, 49.1 mmol) in THF (75 mL) was dropwise added to the reaction mixture and stirring was continued at room temperature overnight. Aqueous 6 M HCI (75 mL) was added to the reaction mixture while cooling with an icebath, after which CH2CI2 was added. The organic layer was separated, washed with brine, dried (Na2SO4), concentrated and co-evaporated with a minimal amount of Et2O. Crystallization of the residue out of EtOAc/heptane resulted in 11 (11.32 g, 71 percent) |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
22% | With triethylamine; In dichloromethane; for 16h; | 2,8-Diazaspiro[4.5]decan-1 -one hydrogen chloride (200 mg, 1.049 mmol) was dissolved in a mixture of dichloromethane (10 mL) and triethylamine (0.439 mL, 3.15 mmol), and 3-(trifluoromethyl)benzenesulfonyl chloride (308 mg, 1.259 mmol) was added. After 16 h, the reaction mixture was concentrated in vacuo, and the resulting residue was purified by silica column chromatography on SP4 (gradient elution: 0 - 20% MeOH - DCM) to give two batches of the desired product as white solids: 8-[3- (trifluoromethyl)phenyl]sulfonyl}-2,8-diazaspiro[4.5]decan-1 -one (204 mg, 0.557 mmol, 53% yield) and 8-[3-(trifluoromethyl)phenyl]sulfonyl}-2,8- diazaspiro[4.5]decan-1 -one (83 mg, 0.227 mmol, 22% yield). 1 H NMR (400 MHz, DMSO-de) delta ppm 1 .45 (ddd, J=13.47, 3.55, 3.43 Hz, 2 H) 1.62 - 1 .71 (m, 2 H) 1 .76 (t, J=6.80 Hz, 2 H) 2.59 - 2.69 (m, 2 H) 3.08 (t, J=6.82 Hz, 2 H) 3.47 - 3.56 (m, 2 H) 7.60 (s, 1 H) 7.92 (t, J=7.87 Hz, 1 H) 7.98 (br. s., 1 H) 8.08 (d, J=8.00 Hz, 1 H) 8.14 (d, J=7.78 Hz, 1 H). MS ES+ve m/z 363 (M+H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
85% | With potassium carbonate; In acetone; at 20℃; | To the solution of methyl ind line~6-carboxyiate (150 mg, 0,85 mmoi) in 5 ml acetone were added K2CO3 (351 mg, 2.54 mmoi) and 3-(triuQromethyl)benzenesuifonyi chloride (271 mu,, 1.69 mmoi). The reaction mixture was stirred at room temperature overnight. The completion of the reaction was monitored by HPLC Upon completion, the solvent was removed in vacuo. The crude product was purified by Combiflash silica gel chromatography (0-20percent of EtOAc in hexarse), which provided 277 mg (85percent) of the title compound as a colorless solid; 1H NMR (400 MHz, CDCis) 5 = 8.25 (d, J - 1.5 Hz, 1 H), 8.12 (s, 1 H), 8.00 (d, J - 8.1 Hz, 1 H), 7.84 (d, J = 7.9 Hz, 1 H), 7,74 (d.d, J =· 1.4, 7.8 Hz, 1 H), 7.66 - 7.58 (m, 1 H), 7.17 (d, J - 7.9 Hz, 1 H), 4.01 (t, J - 8.6 Hz, 2 H), 3.95 (s, 3 H), 3.00 (t, J ~ 8.6 Hz, 2 H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
75.4% | With triethylamine; In dichloromethane; at 25℃; for 4h; | General procedure: To a mechanically stirred suspension of suspension of 1 (0.21 g, 0.53 mmol) in 30 ml CH2Cl2 were added triethylamine (0.5 ml) and aromatic sulfonyl chloride (0.53 mmol) at 25 C for 4 h. The reaction process was detected by TLC method. Then, antagonized by dilute sodium hydroxide, extracted, and washed with ether and water, evaporated under vacuum. Finally, the mixture was recrys-tallizated from ethyl acetate , providing a total product yield of 65.4%-88.6 %. |
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