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[ CAS No. 1897-52-5 ] {[proInfo.proName]}

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Type HazMat fee for 500 gram (Estimated)
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Limited Quantity USD 15-60
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Inaccessible (Haz class 6.1), International USD 150+
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Chemical Structure| 1897-52-5
Chemical Structure| 1897-52-5
Structure of 1897-52-5 * Storage: {[proInfo.prStorage]}

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Quality Control of [ 1897-52-5 ]

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Product Details of [ 1897-52-5 ]

CAS No. :1897-52-5 MDL No. :MFCD00001778
Formula : C7H3F2N Boiling Point : No data available
Linear Structure Formula :- InChI Key :BNBRIFIJRKJGEI-UHFFFAOYSA-N
M.W : 139.10 Pubchem ID :74695
Synonyms :

Calculated chemistry of [ 1897-52-5 ]      Expand+

Physicochemical Properties

Num. heavy atoms : 10
Num. arom. heavy atoms : 6
Fraction Csp3 : 0.0
Num. rotatable bonds : 0
Num. H-bond acceptors : 3.0
Num. H-bond donors : 0.0
Molar Refractivity : 31.07
TPSA : 23.79 ?2

Pharmacokinetics

GI absorption : High
BBB permeant : Yes
P-gp substrate : No
CYP1A2 inhibitor : Yes
CYP2C19 inhibitor : No
CYP2C9 inhibitor : No
CYP2D6 inhibitor : No
CYP3A4 inhibitor : No
Log Kp (skin permeation) : -5.84 cm/s

Lipophilicity

Log Po/w (iLOGP) : 1.61
Log Po/w (XLOGP3) : 1.84
Log Po/w (WLOGP) : 2.68
Log Po/w (MLOGP) : 2.32
Log Po/w (SILICOS-IT) : 2.64
Consensus Log Po/w : 2.22

Druglikeness

Lipinski : 0.0
Ghose : None
Veber : 0.0
Egan : 0.0
Muegge : 2.0
Bioavailability Score : 0.55

Water Solubility

Log S (ESOL) : -2.31
Solubility : 0.688 mg/ml ; 0.00495 mol/l
Class : Soluble
Log S (Ali) : -1.96
Solubility : 1.52 mg/ml ; 0.011 mol/l
Class : Very soluble
Log S (SILICOS-IT) : -3.01
Solubility : 0.135 mg/ml ; 0.000971 mol/l
Class : Soluble

Medicinal Chemistry

PAINS : 0.0 alert
Brenk : 0.0 alert
Leadlikeness : 1.0
Synthetic accessibility : 1.41

Safety of [ 1897-52-5 ]

Signal Word:Danger Class:6.1
Precautionary Statements:P501-P261-P270-P271-P264-P280-P337+P313-P305+P351+P338-P361+P364-P332+P313-P301+P310+P330-P302+P352+P312-P304+P340+P311-P403+P233-P405 UN#:3439
Hazard Statements:H301+H311+H331-H315-H319 Packing Group:
GHS Pictogram:

Application In Synthesis of [ 1897-52-5 ]

* 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.

  • Upstream synthesis route of [ 1897-52-5 ]
  • Downstream synthetic route of [ 1897-52-5 ]

[ 1897-52-5 ] Synthesis Path-Upstream   1~7

  • 1
  • [ 1897-52-5 ]
  • [ 141-52-6 ]
  • [ 119584-73-5 ]
Reference: [1] Journal of Heterocyclic Chemistry, 1988, vol. 25, p. 1173 - 1177
  • 2
  • [ 64-17-5 ]
  • [ 1897-52-5 ]
  • [ 119584-73-5 ]
Reference: [1] Journal of Medicinal Chemistry, 2012, vol. 55, # 7, p. 3135 - 3143
  • 3
  • [ 1897-52-5 ]
  • [ 143879-78-1 ]
Reference: [1] Patent: CN106588818, 2017, A,
  • 4
  • [ 1897-52-5 ]
  • [ 1009734-33-1 ]
Reference: [1] Journal of Medicinal Chemistry, 2012, vol. 55, # 7, p. 3135 - 3143
  • 5
  • [ 1897-52-5 ]
  • [ 871940-31-7 ]
Reference: [1] Journal of Organic Chemistry, 2011, vol. 76, # 12, p. 5143 - 5148
  • 6
  • [ 1897-52-5 ]
  • [ 1250444-23-5 ]
YieldReaction ConditionsOperation in experiment
71% at 35℃; Inert atmosphere 2 L four-necked flask, 600mL60percent sulfuric acid was added, with stirring was added 2,6-difluorobenzonitrile 139.0g (1.0mol), in N2Under protection, control of the reaction temperature below 35°C, points added 250.5g of KBrO3 10 portions(1.5mol), TLC monitoring, the reaction 5-6 days, until starting material disappeared point, the reaction was stopped, the ice preparation 800mL20percent saline solution, the reaction mixture was poured into iced brine.After settlement products, quickly suction filtration to give a crude orange product with CCl4The crude product was dissolved, respectively, with 5percent NaHSO3Solution, saturated Na2CO3Solution was washed with water until the solution was neutral, dried over anhydrous sodium sulfate, the solution was filtered, 60 water bath rotary evaporation to give a pale yellow liquid was cooled to a standstill for some time as a pale yellow solid, distillation under reduced pressure, condensed steam heated, oil bath was raised to 90 deg.] C, taking the temperature of 58-62°C steam fraction, and cooled to obtain a white solid product, 71percent yield.
71% at 35℃; Inert atmosphere Take 2 L four bottles, add 600 mL of 60percent sulfuric acid, electric stirring by adding 2,6_ difluorobenzonitrile 139.0 g (1.0 mol). Under N2 protection, the control reaction temperature was below 35 ° C, and 250 μm g of KBr03 (1.5 mol) was added to 10 batches. TLC monitoring, reaction 5-6 days, until the raw material point disappears, stop the reaction, the preparation of 800 mL 20percent ice salt solution, the reaction solution Into the ice salt. After the product settling, the rapid filtration, the orange crude products, with CC14 dissolved crude products, respectively, with 5percent Of NaHS03 solution, saturated Na2C03 solution and water to the solution was neutral, dried over anhydrous sodium sulfate, the solution was filtered, the water bath 60 ° C steamed to obtain light yellow liquid, rest for some time to cool into a pale yellow solid, vacuum distillation, warm water condensing steam, oil The bath was heated to 90 ° C and the fraction at a steam temperature of 58-62 ° C was cooled to give a white solid product in 71percent yield
Reference: [1] Patent: CN104004016, 2016, B, . Location in patent: Paragraph 0043; 0044; 0045
[2] Patent: CN104017021, 2016, B, . Location in patent: Paragraph 0030-0034
[3] Patent: WO2013/39802, 2013, A1, . Location in patent: Page/Page column 37; 38
[4] Patent: EP2755656, 2016, B1, . Location in patent: Paragraph 0118; 0119
  • 7
  • [ 1897-52-5 ]
  • [ 1250444-23-5 ]
YieldReaction ConditionsOperation in experiment
70% at 0 - 20℃; for 24 h; A solution of 2,6- difluorobenzonitrile (5.0 g, 36 mmol) in concentrated sulfuric acid (25 mL) was treated with NBS (7.0 g, 29.5 mmol) at 0 °C and stirred at ambient temperature for 24 hours. Ice (about 100 g) was added to the reaction mixture. After melting, the mixture was extracted with MTBE (100 mL). The organic layer was separated, washed with brine, dried (sodium sulfate), filtered and concentrated under reduced pressure. The residue was purified by flash chromatography on silica gel eluting with 5: 1 to 1 :2 hexanes/ethyl acetate to give both 3- bromo-2,6-difluorobenzonitrile (5.5 g, 70percent yield) as solid and 3-bromo-2,6- difluorobenzamide (2.1 g, 25percent) as solid.
Reference: [1] Patent: WO2015/35223, 2015, A1, . Location in patent: Paragraph 0774
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