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CAS No. : | 368-78-5 | MDL No. : | MFCD00025093 |
Formula : | C7H7F3N2 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | - |
M.W : | 176.14 | Pubchem ID : | - |
Synonyms : |
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Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P261-P280-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H302-H312-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 |
---|---|---|
Multi-step reaction with 2 steps 1: AcOH / Heating 2: aq. NaOH / ethanol |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; N-ethyl-N,N-diisopropylamine In DMF (N,N-dimethyl-formamide) at 20℃; for 4h; | 43.B Step B Ethyl 4-({5-oxo-1-[3-(trifluoromethyl)phenyl]-4,5-dihydro-1H-1,2,4-triazol-3-yl}amino)benzoate To a solution of the product obtained in Step A (49.45 g) in dimethylformamide (300 ml) there are added, in succession, 3-(trifluoromethyl)phenylhydrazine (24 ml), EDCI (63.8 g) and diisopropylethylamine (32 ml). The reaction mixture is stirred for 4 hours at ambient temperature. The reaction mixture is poured into 10% aqueous HCl (2 L) and the product is extracted with ethyl acetate (4 times). The organic phase is washed with a 10% solution of HCl (twice) and with water saturated with NaCl. The organic phase is dried over MgSO4, filtered and evaporated to dryness. The product obtained is dissolved in a 10% solution of trifluoroacetic acid in dioxane and heated at 50° C. overnight. The organic phase is concentrated and the solid obtained is filtered off, washed with ethyl ether (3 times) and then dried in vacuo to yield the title compound. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
97% | With acetic acid In ethanol at 120℃; for 2h; | P7.1 Example P7; Preparation of 3-(4-chlorophenvl)-1-(3-trifluoromethylphenyl)-5-vinyl-1 H- pyrazol (20); Step 1; Preparation of 5- (4-chlorophenyl)-2- (3-trifluoromethylphenyl)-2H-pyrazol-3-yl- amine (18); A solution of 7.93 g of 3-trifluoromethylphenylhydrazine and 7.69 g of 4-chlorobenzoyl- acetonitrile in 40 mi of glacial acetic acid and 40 ml of ethanol is heated at 120°C for two hours until the reaction is complete (TLC monitoring). The reaction mixture is completely concentrated and the residue is caused to crystallise by azeotropic treatment with toluene (4x 20 ml) and diethyl ether (3x 20ml). 14.0 g (97% of theory) of the aminopyrazole (18) are obtained in the form of a solid having a melting point of 128-130°C, which is used in the next reaction without further purification. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Combinatorial reaction / High throughput screening (HTS); | Libraries were prepared in a single compound per well format. Stock solutions of all aldehydes (0.5 M) and aryloxyamines (0.4 M) were prepared in DMSO. A Gilson 215 Liquid Handler equipped with a 1 mL syringe, 1.1 mL tubing, and a 13 mm I.D. probe was used to distribute all solutions into a 96 well (2 mL volume) polypropylene plate at a rate of 0.3 mL/min. To make 0.5 mL of a 0.1 M solution of each oxime ether, 100 muL (0.05 mmol, 1 eq.) of aldehyde, 156 muL (0.63 mmol, 1.25 eq.) of aryloxyamine, and 244 muL of 0.164 M acetic acid, were distributed to each well of the plate. The plate was covered and agitated for 24 h at room temperature using a dual action shaker. The reactions were diluted to 720 muM in DMSO and analyzed by LC-MS to determine yield, purity, and identity. Compounds were stored frozen at -20 C. after synthesis. Reaction yield was determined using the integrated value of aldehyde that remained in the reaction mixture. Calibration curves of all aldehydes were made and the yield of each oxime ether was calculated assuming all the aldehyde that reacted quantitatively formed oxime ether; i.e. if 5% of aldehyde remained in the reaction mixture the yield of oxime ether would be 95%. Yields ranged from 98-100% and >95% purity in all wells. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
64% | With acetic acid In methanol | 5 EXAMPLE 5 SPC5 EXAMPLE 5 SPC5 20 g (0.113 mole) of 3-trifluoromethyl-phenylhydrazine were dissolved in 50 ml of methanol with addition of 5 ml of acetic acid; 16 g (0.115 mole) of sulfinylaniline were added dropwise at a temperature of 22°C. The product crystallized out while the temperature rose to about 30°C. After filtration and drying, 16 g of N-sulfinyl-N-' -(3-trifluoromethylphenyl)-hydrazine of melting point 100°C were obtained. The yield was 64% of theory. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
69% | Stage #1: 3-(trifluoromethyl)-aniline hydrochloride With hydrogenchloride; sodium nitrite In water at 5℃; for 0.25h; Stage #2: With hydrogenchloride In water for 0.166667h; | 56.1 Step 1: (3-(trifluoromethyl)phenyl)hydrazine Using procedures outlined in Tetrahedron, 8, 67-72; 1 960, the title compound was obtained. A solution of sodium nitrite (82 g) in water (160 mL) was added toa vigorously stirred suspension of commercially available 3-(trifluoromethyl)- aniline hydrochloride (147 g) in a mixture of concentrated HCI (400 mL) and water (270 mL) at 5°C. After 15 minutes, the diazo-solution was poured slowly with stirring into a solution of stannous chloride dehydrate (530 g) in concentrated HCI (530 mL). After being stirred for a further 10 minutes, thesolution was diluted with water, filtered and then rendered alkaline with 4 N NaOH. After working up by partitioning between DCM and water, then separating and drying the organic layers over Mg504, the title compound was obtained as a pale-yellow liquid (10 g, 69%) 1 H NMR (400mHz, CDCI3) 2H 3.50 (2H, brs), 5.40 (1 H, br 5), 6.90-7.30 (3H, m). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
90% | In methanol; at 65℃; for 2h; | A mixture of CC (100 mg, 0.4 mmol) and (3-(trifluoromethyl)phenyl)hydrazine (79 mg, 0.4 mmol) in anhydrous methanol(20 mL) was heated at 65 C for 2 h, and then cooled to 15 C. Filterthe cooling liquid. Reddish brown crystals were collected in a yieldof 90%. (150 mg, 0.4 mmol). m.p. 242.1e244.6 C. 1H NMR(500 MHz, DMSO-d6) d10.78 (s, 1H), 10.10 (s, 1H), 8.07 (dd,J1 7.8 Hz, J2 1.5 Hz, 1H), 7.80 (dd, J1 11.6 Hz, J2 7.0 Hz, 3H),7.74e7.68 (m, 1H), 7.57 (dd, J1 7.6 Hz, J2 1.5 Hz, 1H), 7.43e7.34(m, 2H), 7.07e6.96 (m, 3H), 6.88 (d, J 8.2 Hz, 1H). 13C NMR(100 MHz, DMSO) d(ppm) 160.39, 156.81, 155.60, 152.63, 138.89,133.07, 131.94, 131.60, 131.07, 130.285(q, 2JC-F 32.6 Hz), 127.86,127.32, 125.63(q, 3JC-F 3.7 Hz), 124.14(q, 1JC-F 272.3 Hz), 120.57(q, 3JC-F 3.9 Hz), 120.15, 119.92, 117.54, 116.53, 114.66, 114.14. 19FNMR (376.5 MHz, DMSO) d(ppm) 61.388. ESI-MS: m/z. Calculatedfor C21H14F3N3O2 397.10; found [MH] 398.1111. |
90% | In methanol; at 6℃; for 2h; | Compound IV (100 mg, 0.4 mmol) and 3-trifluoromethylphenylhydrazine (V) (79 mg, 0.4 mmol) were dissolved in anhydrous methanol (20 mL), and the mixture was heated at 6 C for 2 hr. After the reaction was completed, the reaction solution was cooled to 15 C, and crystals were precipitated.Filtration gave reddish brown crystals (150 mg, 0.4 mmol), product (I). The yield was 90%. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
99% | Stage #1: 6-chloro-9-(1-methylethyl)-9H-purine; 3-(trifluoromethyl)phenylhydrazine With N-ethyl-N,N-diisopropylamine In butan-1-ol at 150℃; Microwave irradiation; Stage #2: With oxygen In butan-1-ol |