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[ CAS No. 372-38-3 ] {[proInfo.proName]}

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Cat. No.: {[proInfo.prAm]}
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Chemical Structure| 372-38-3
Chemical Structure| 372-38-3
Structure of 372-38-3 * Storage: {[proInfo.prStorage]}

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Quality Control of [ 372-38-3 ]

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Product Details of [ 372-38-3 ]

CAS No. :372-38-3 MDL No. :MFCD00000333
Formula : C6H3F3 Boiling Point : No data available
Linear Structure Formula :- InChI Key :JXUKFFRPLNTYIV-UHFFFAOYSA-N
M.W : 132.08 Pubchem ID :9745
Synonyms :

Safety of [ 372-38-3 ]

Signal Word:Danger Class:3
Precautionary Statements:P210-P261-P305+P351+P338 UN#:1993
Hazard Statements:H225-H315-H319-H335 Packing Group:Ⅱ
GHS Pictogram:

Application In Synthesis of [ 372-38-3 ]

* 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.

  • Downstream synthetic route of [ 372-38-3 ]

[ 372-38-3 ] Synthesis Path-Downstream   1~10

  • 1
  • [ 372-38-3 ]
  • [ 2368-53-8 ]
  • 2
  • [ 372-38-3 ]
  • [ 2368-53-8 ]
  • [ 319-88-0 ]
  • 3
  • [ 319-88-0 ]
  • [ 372-38-3 ]
  • [ 2368-53-8 ]
  • [ 2106-40-3 ]
  • 5
  • [ 37822-98-3 ]
  • [ 182482-25-3 ]
  • [ 372-38-3 ]
  • [ 363-72-4 ]
  • 7
  • [ 7343-33-1 ]
  • [ 372-38-3 ]
  • 3-bromo-1-(3,5-difluorophenyl)-1,2,4-triazole [ No CAS ]
YieldReaction ConditionsOperation in experiment
73% With N,N,N,N,N,N-hexamethylphosphoric triamide; potassium carbonate; at 112℃; An HMPA (45.01 mL) solution of <strong>[7343-33-1]3-bromo-1H-1,2,4-triazole</strong> (4.439 g, 30 mmol) was treated with 1,3,5-trifluorobenzene (approximately 39.62 g, 300.0 mmol) and potassium carbonate (approximately 4.146 g, 30.00 mmol). The reaction mixture was stirred in a Q-tube at 112 °C overnight. To the reaction mixture was added ethyl acetate and brine. The organic phase was dried over magnesium sulfate, filtered, and concentrated to dryness under reduced pressure. The crude material was purified by silica gel chromatography (80 g column; 20percent ethyl acetate/heptane). The desired fractions were concentrated to dryness under reduced pressure to yield 3-bromo-1-(3,5-difluorophenyl)-1,2,4-triazole (5.7 g, 21.92 mmol, 73percent). 1H MR (400 MHz, OMSO-de) delta 9.39 (s, 1H), 7.77 - 7.57 (m, 2H), 7.39 (tt, J = 9.3, 2.3 Hz, 1H) ppm. ESI-MS m/z calc. 258.95566, found 260.05 (M+l)+; Retention time: 0.8 minutes
  • 8
  • [ 2368-53-8 ]
  • [ 372-38-3 ]
YieldReaction ConditionsOperation in experiment
85% With dipotassium hydrogenphosphate; palladium 10% on activated carbon; hydrogen; In water; at 140℃; under 11251.1 Torr; l,3-Dichloro-2,4,6-trifluorobenzene (100 g), water (500 g), dipotassium hydrogen phosphate (260 g) and Palladium/carbon (10%; 2 g) were taken in a reaction vessel. Reaction vessel was flushed first with nitrogen and then with hydrogen. The reaction mixture was heated to 140C. Hydrogen gas was purged continuously into the reaction vessel at 140C and 15 kg/centimeter2 pressure. Progress of the reaction was monitored by gas chromatography. After completion of the reaction, reaction mass was cooled to 10-15C and excess hydrogen pressure was released. 1,3,5- trifluorobenzene was recovered from the reaction mass. The bottom mass containing Pd/ C was filtered, washed with fresh water and recycled in next batch. Yield: 85% (0126) Purity: 99.6% (gas chromatography).
  • 9
  • [ 121-43-7 ]
  • [ 372-38-3 ]
  • [ 182482-25-3 ]
YieldReaction ConditionsOperation in experiment
73.6% (1)Under a nitrogen atmosphere, 60.0 g of trifluorobenzene and 500 mL of tetrahydrofuran were placed in a 1 L three-necked flask.The agitation was turned on and the system was cooled to below -50 C under nitrogen protection.After the end of the temperature drop, 200 ml of 2.5 mol/L n-butyllithium was added dropwise below -50 C.The n-hexane solution was stirred and kept at -50 C for 1.5 hours after the completion of the dropwise addition.After the end of the heat preservation, 52.0 g of trimethyl borate was added dropwise.The dropping temperature was controlled to be below -50 C.After the completion of the dropwise addition, the sample was incubated at -50 C for 1 hour, and then sampled for HPLC analysis.The reaction solution was poured into 450 mL of 1 N HCl and hydrolyzed at a hydrolysis temperature of 20 C or lower.After the hydrolysis is completed, the layers are allowed to stand, and the lower layer of water is separated and discarded.The organic phase was washed by adding 150 mL of half-saturated brine, and the aqueous layer was separated and discarded.The organic phase was washed with 150 mL of saturated brine, and the aqueous layer was separated and discarded.The organic phase was concentrated under reduced pressure in a water bath at 48 C until no flow, then 100 mL of n-heptane was added.Continue to steam under reduced pressure until no flow. Add 250 mL of n-heptane to beat at -20 C, suction filtration,Rinse with pre-cooled n-heptane and dry to obtain 58.9 g of compound II product.Yield 73.6%;
  • 10
  • [ 5419-55-6 ]
  • [ 372-38-3 ]
  • [ 182482-25-3 ]
YieldReaction ConditionsOperation in experiment
81.8% (1) Add 60.0 g of trifluorobenzene to a 1 L three-necked flask under nitrogen protection.500 mL of tetrahydrofuran. The agitation was turned on and the system was cooled to below -50 C under nitrogen protection.After the end of the temperature drop, 300 ml of 1.5 mol/L sec-butyllithium was added dropwise below -50 C.The n-hexane solution was stirred and kept at -50 C for 1.5 hours after the completion of the dropwise addition.After the end of the heat preservation, 94.0 g of triisopropyl borate was added dropwise.The dropping temperature was controlled to be below -50 C.After the completion of the dropwise addition, the sample was incubated at -50 C for 1 hour, and then sampled for HPLC analysis.The reaction solution was poured into 500 mL of 1 N HCl and hydrolyzed at a hydrolysis temperature of 20 C or lower.After the hydrolysis is completed, the layers are allowed to stand, and the lower layer of water is separated and discarded.The organic phase was washed by adding 200 mL of semi-saturated brine, and the aqueous layer was separated and discarded.The organic phase was washed with 200 mL of saturated brine, and the aqueous layer was separated and discarded.The organic phase was concentrated under reduced pressure at 55 C in a water bath to dryness, and then 100 mL of n-heptane was added.Continue to steam under reduced pressure until no flow. Add 250 mL of n-heptane to beat at -20 C, suction filtration,Rinse with pre-cooled n-heptane and dry to obtain 65.5 g of compound II product.Yield 81.8%;
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