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CAS No. : | 24065-33-6 | MDL No. : | MFCD00041426 |
Formula : | C5H3ClO2S | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | QZLSBOVWPHXCLT-UHFFFAOYSA-N |
M.W : | 162.59 | Pubchem ID : | 95048 |
Synonyms : |
|
Num. heavy atoms : | 9 |
Num. arom. heavy atoms : | 5 |
Fraction Csp3 : | 0.0 |
Num. rotatable bonds : | 1 |
Num. H-bond acceptors : | 2.0 |
Num. H-bond donors : | 1.0 |
Molar Refractivity : | 36.29 |
TPSA : | 65.54 Ų |
GI absorption : | High |
BBB permeant : | Yes |
P-gp substrate : | No |
CYP1A2 inhibitor : | No |
CYP2C19 inhibitor : | No |
CYP2C9 inhibitor : | No |
CYP2D6 inhibitor : | No |
CYP3A4 inhibitor : | No |
Log Kp (skin permeation) : | -5.57 cm/s |
Log Po/w (iLOGP) : | 1.32 |
Log Po/w (XLOGP3) : | 2.42 |
Log Po/w (WLOGP) : | 2.1 |
Log Po/w (MLOGP) : | 1.17 |
Log Po/w (SILICOS-IT) : | 2.58 |
Consensus Log Po/w : | 1.92 |
Lipinski : | 0.0 |
Ghose : | None |
Veber : | 0.0 |
Egan : | 0.0 |
Muegge : | 1.0 |
Bioavailability Score : | 0.56 |
Log S (ESOL) : | -2.72 |
Solubility : | 0.311 mg/ml ; 0.00192 mol/l |
Class : | Soluble |
Log S (Ali) : | -3.44 |
Solubility : | 0.0592 mg/ml ; 0.000364 mol/l |
Class : | Soluble |
Log S (SILICOS-IT) : | -1.65 |
Solubility : | 3.67 mg/ml ; 0.0226 mol/l |
Class : | Soluble |
PAINS : | 0.0 alert |
Brenk : | 0.0 alert |
Leadlikeness : | 1.0 |
Synthetic accessibility : | 2.18 |
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P261-P280-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H302-H315-H319-H332-H335 | Packing Group: | N/A |
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 |
---|---|---|
100% | With thionyl chloride In dichloromethane for 16 h; Heating / reflux | 32.0 g (0.20 mmol) 5-chloro-thiophene-2-carboxylic acid are 150 ml dichloromethane refluxed for 16 h with stirring with 100 ml of thionyl chloride and 250 μl DMF. The reaction mixture is evaporated down i. vac., the residue in each case is mixed 5 times with toluene and twice with dichloromethane and evaporated down completely. The residue is further reacted directly without any further purification.Yield: quant.C5H2Cl2OS (181.04) |
100% | With oxalyl dichloride In dichloromethane for 16 h; Reflux | Intermediate 11A; 5-Chlorothiophene-2-carbonyl chloride 480 mg (2.95 mmol) of 5-chlorothiophene-2-carboxylic acid are dissolved in 24 ml of dichloromethane, and 2.4 ml (27.5 mmol) of oxalyl chloride are added. The mixture is heated under reflux for 16 h. It is then concentrated in vacuo, and the residue is again mixed with dichloromethane and concentrated once again. A viscous oil remains and is dried under high vacuum. 534 mg (quant.) of the target compound are obtained and are reacted further without further purification and characterization. |
96.3% | With bis(trichloromethyl) carbonate; N,N-dimethyl-formamide In toluene at 80℃; for 0.0147222 h; Inert atmosphere; Green chemistry | (1) Passing the material through each module of the microchannel reactor system (including preheating module, reaction module and cooling module) replace the air with nitrogen; (2) 80 g of 5-chloro-2-formic acid thiophene and 40 g of DMF were added to 1,000 ml of toluene, stirring to dissolved material 1; 60 g of triphosgene was added to 600 ml of toluene as the material 2, (3) Control material 1 flow rate of 18ml / min; control material 2 flow rate of 10ml / min; the reaction temperature was 80 deg. C, the molar ratio of material 1 to material 2 is 1: 0.35; the residence time of reaction is 53s, the temperature of cooling module is 25 deg. C; (4) when the reactor material to reach a steady state of each share, collecting the reaction liquid flowing out from the outlet of the reactor, to allow access to material 1 for 50 min (i.e. 900 ml, 70 g of 5-chloro-2-formic acid thiophene) the corresponding reaction solution is, for example, distillation of the solvent by toluene under reduced pressure gave 75.1 g of 5-chloro-2-formylchlorothiophene, yield 96.3percent. |
95% | With thionyl chloride; N,N-dimethyl-formamide In toluene at 5 - 80℃; for 5 h; | In a suitable reactor (for example 250 ml three-necked bottle) in 100 ml toluene, 30g5 - chloro -2 - carboxylic acid thiophene, a catalytic amount of N, N - dimethyl formamide, stirring under cooling to 5 °C following, slowly dropping 30g thionyl chloride, temperature control _AOMARKENCODELTX0AO _ 30 °C. Then completing, system heating to 80 °C, thermal insulation reaction 5.0h, TLC tracking after the reaction is complete, lowering the temperature to 50 - 60 °C, concentrated under reduced pressure, the concentrated residue by vacuum distillation, collecting 82 - 85 °C/4 - 5mmHg distill share 34g colorless transparent liquid, yield: 95percent, GC purity: _AOMARKENCODEGTX0AO _ 99.6percent, single hetero _AOMARKENCODELTX0AO _ 0.15percent. |
89.78% | With thionyl chloride In toluene at 70 - 105℃; | 5-Chlorothiophene-2-carboxylic acid (500 g) was added to toluene (2500 mL) andthe reaction mixture was heated to 70°C to 80°C. Thionyl chloride (275 mL) was added to the reaction mixture over 90 minutes, and the reaction mixture was stirred for 1 hour at 70°C to 80°C. The reaction mixture was heated at 100°C to 105°C for 4 hours to S hours. The reaction mixture was cooled to 60°C to 65°C, and the solvent was completely recovered at 60°C to 65°C under vacuum to obtain 5-chlorothiophene-2-carbonylchloride.Yield: 89.78percent |
87% | With oxalyl dichloride; N,N-dimethyl-formamide In dichloromethane at 20℃; for 15 h; | 137 ml (1.57 mol) of oxalyl dichloride are added to a suspension of 51.2 g (0.315 mmol) of 5-chlorothiophene-2-carboxylic acid in 307 ml of dichloromethane. After addition of 2 drops of DMF, the mixture is stirred at room temperature for 15 hours. The solvent and excess oxalyl chloride are then removed on a rotary evaporator. The residue is distilled under reduced pressure. The product boils at 74-78° C. and a pressure of 4-5 mbar. This gives 50.5 g (87percent of theory) of an oil which solidifies on storage in the fridge. 1H-NMR (400 MHz, CDCl3, δ/ppm): 7.79 (d, 1H), 7.03 (d, 1H). GC/MS (method 9): Rt=5.18 min. MS (EI+, m/z): 180/182/184 (2 35Cl/37Cl) M+. |
87% | With oxalyl dichloride In dichloromethane at 20℃; for 15 h; | Example 1A 5-Chlorothiophene-2-carbonyl chloride 137 ml (1.57 mol) of oxalyl chloride were added to a suspension of 51.2 g (0.315 mmol) of 5-chlorothiophene-2-carboxylic acid in 307 ml of dichloromethane. After addition of 2 drops of DMF the mixture was stirred at room temperature for 15 hours. The solvent and excess oxalyl chloride were then removed on a rotary evaporator. The residue was distilled under reduced pressure. The product boiled at 74-78° C. and a pressure of 4-5 mbar. This gave 50.5 g (87percent of theory) of an oil which solidified on storage in the fridge. 1H-NMR (400 MHz, CDCl3, δ/ppm): 7.79 (d, 1H), 7.03 (d, 1H). GC/MS (Method 4): Rt=5.18 min. MS (EI+, m/z): 180/182/184 (235Cl/37Cl) M+. |
87% | With oxalyl dichloride In dichloromethane at 20℃; for 15 h; | Example 1A5-Chlorothiophene-2-carbonyl chloride 137 ml (1.57 mol) of oxalyl chloride were added to a suspension of 51.2 g (0.315 mmol) of 5-chlorothiophene-2-carboxylic acid in 307 ml of dichloromethane. After addition of 2 drops of DMF the mixture was stirred at room temperature for 15 hours. The solvent and excess oxalyl chloride were then removed on a rotary evaporator. The residue was distilled under reduced pressure. The product boiled at 74-78° C. and a pressure of 4-5 mbar. This gave 50.5 g (87percent of theory) of an oil which solidified on storage in the fridge.1H-NMR (400 MHz, CDCl3, 6/ppm): 7.79 (d, 1H), 7.03 (d, 1H).GC/MS (Method 4): Rt=5.18 min.MS (EI+, m/z): 180/182/184 (2 35Cl/37Cl) M+. |
16.7 g | With oxalyl dichloride; N,N-dimethyl-formamide In dichloromethane for 1 h; Inert atmosphere; Reflux | Oxalyl chloride (14.0 g, 0.11 mol) is added dropwise to a suspension of 5-chloro-thiophene-2-carboxylic acid (5, 15 g, 0.09 mol) and catalytic amounts of N,N-dimethylformamide in 150 ml of dichloromethane. The reaction mixture is stirred for 1 h at room temperature, then heated to reflux for 1 h. After cooling to room temperature, the reaction mixture is evaporated under reduced pressure to deliver the intermediate 5-chloro-thiophene-2-carboxylic acid chloride (16.7 g, 0.09 mol) as residue. This yellow oil was dissolved in 180 ml of dichloromethane and N,O-dimethylamine hydrochloride (9.9 g, 0.10 mol) was added at 5 °C. Subsequently triethylamine (20.5 g, 0.20 mol) was added dropwise at 5 °C. The resulting thick yellow suspension was diluted with 80 ml of dichloromethane and stirred for 16 h at room temperature. It was washed with water, the organic phase washed with brine, dried over sodium sulfate and concentrated under reduced pressure to give 5-chloro-thiophene-2-carboxylic acid methoxy-methyl-amide (6, 18.8 g, 0.09 mol, 98percent) as a yellow oil. 1H NMR (CDCl3): δ = 3.38 (s, 3H), 3.80 (s, 3H), 6.96 (d, 1H), 7.79 (d, 1H). MS (ESI): m/z = 206 (M), 208 (M+2). |
68 g | With thionyl chloride In tolueneReflux | 62 gm (0.3827 moles) 5-Chloro thiophene-2 -carboxylic acid was charged in 310 ml toluene. To it was charged 67 gm (0.5630 moles) of thionyl chloride at room temperature. The reaction mixture was heated to reflux temperature for about 10- 12 hours. Toluene was distilled out completely to get an oil of 5-chloro thiophene-2 -carbonyl chloride (68 gm). |
7.36 g | With thionyl chloride In toluene at 105℃; for 8 h; | To a solution of 5-chlorothiophene-2-carboxylic acid (VI) (6.51 g, 40 mmol) in toluene,Slowly drop the thionyl chloride(9.52 g, 80 mmol),And then heated to 105 ° C for 8 hours,The reaction solution was cooled to room temperature and dissolved under reduced pressureTo give oily substance 7.36 g of 5-chlorothiophene-2-carboxylic acid chloride (VII) without the need for purification directly for the next step. |
2.1 g | at 80℃; for 3 h; | Add 1.9 g of the compound 5-chlorothiophene-2-carboxylic acid to a 50 mL two-necked flask equipped with a rotor and a thermometer.A drop of pyridine was added, 1.8 g of thionyl chloride was slowly added, and the mixture was heated to 80 ° C with stirring, and the solid was gradually dissolved, and the reaction was kept for 3 hours.After cooling to room temperature, excess thionyl chloride was distilled off under reduced pressure.2.1 g of 5-chlorothiophene-2-carbonyl chloride was obtained as a light yellow oily liquid. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
99% | at 50 - 55℃; for 12 - 20 h; | To a solution of δ-chloro^-thiophenecarboxylic acid (2.0 g, 12.3 mmol) in dry MeOH (75 ml.) was added H2SO4 (1 ml_). The reaction mixture was heated to 50° C for 2Oh and was then concentrated under vacuum. The residue was dissolved in DCM and washed several times with saturated NaHCO3 solution. The organic fraction was dried (Na2SO4), concentrated under vacuum and used directly without further purification 21.3g, quant.): LC-MS (ES) m/z = 177 (M+H)+.To a solution of δ-chloro^-thiophenecarboxylic acid (20 g, 123 mmoles) inMeOH (200 ml.) was added cone. H2SO4 (5 ml_). After heating to 55°C for 12 h, the reaction solution was concentrated and diluted with DCM (250 ml_). The DCM solution was washed with aqueous NaHCO3, then H2O and dried over Na2SO4. Concentration under vacuum gave the title compound as a yellow oil (21.5 g, 99percent): LCMS (ES) m/z 178 (M+H)+ . |
94.1% | at 60℃; for 16 h; | 2-chlorothiophene-5-carboxylic acid (Compound 15, 90.00 g, 553.54 mmol)Soluble in 500mL hydrochloric acid/methanol solution60 °C reaction for 16 hours,The solvent was recovered under reduced pressure, dissolved in 500 mL of ethyl acetate, and washed with saturated sodium carbonate to pH 8-9.After drying over anhydrous sodium sulfate, the solvent is recovered under reduced pressure.92.0 g of a yellow oil (compound 16) was obtained with a yield of 94.1percent. |
91% | for 6 h; Heating / reflux | Step 1: Production of methyl 5-chlorothiophene-2-carboxylate To a solution of 5-chlorothiophene-2-carboxylic acid (5.07 g, 31.2 mmol) in methanol (30 ml) was added conc. sulfuric acid (2 ml), and the mixture was heated under reflux for 6 hr. After allowing to cool to room temperature, water was added to the reaction mixture, and the mixture was extracted with ethyl acetate. The organic layer was washed successively with water, saturated aqueous sodium hydrogen carbonate solution, and saturated brine, and dried over anhydrous magnesium sulfate. After filtration, the solvent was evaporated under reduced pressure to give methyl 5-chlorothiophene-2-carboxylate (4.99 g, yield 91percent) as a crude product. 1H-NMR(400MHz, δppm, DMSO-d6): 7.58(1H, d, J=8.0Hz), 6.93(1H, d, J=4.0Hz), 3.87(3H, s). |
73% | Reflux | General procedure: 5-Halide thiophene-2-carboxylate (1equiv) was solved in 3ml absolute methanol, and concentrated sulfuric acid (2.2equiv) was added. The reaction mixture was heated under reflux conditions overnight. After cooling to room temperature, the solvent was evaporated. Purified water was added, and the reaction mixture was neutralized with saturated NaHCO3. After extraction with dichloromethane, the combined organic phase was washed with purified water, 5percent NaHCO3 and brine. The organic layer was dried over MgSO4 and filtrated. The solvent was removed under reduced pressure, and the white solid phase was used without any further purification. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
80% | at 80℃; for 16 h; | H2S04 (15 ml) was added at RT to a stirred solution of 5-chloro-thiophene-2-carboxylic acid (15 g, 0.0925mol) in ethanol (300 ml). Then the reaction mixture was stirred at aooc for 16 h. The reaction mixture was concentrated under reduced pressure and concentrated mass was diluted with ethyl acetate (300 ml).The organic mixture was washed with water (3 x 100 ml), NaHC03 solution (3 x 100 ml) and brine (100 ml). Organic layer was dried over Na2S04 and concentrated under reduced pressure to give ethyl 5- chlorothiophene-2-carboxylate (14 g, 80 percent) as colorless liquid. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
100% | With iron(III) chloride; bromine In acetic acid at 25℃; for 168 h; Heating / reflux | A solution of bromine (634 uL, 12.3 mmol) in AcOH (2.5 ml.) was added dropwise to δ-chloro^-thiophenecarboxylic acid (2 g, 12.3 mmol) and FeCI3 (399 mg, 2.50 mmol) in AcOH (25 ml.) at 25 0C. The reaction mixture was warmed to reflux where additional bromine (634 uL, 12.3 mmol) and FeCI3 (399 mg, 2.50 mmol) were added. After 7d, the solution was poured onto ice and the precipitate was filtered and washed with water affording the title compound (3 g, quant.) as a yellow powder: LCMS (ES) m/z 242 (M+H)+. |
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