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[ CAS No. 171408-84-7 ] {[proInfo.proName]}

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Chemical Structure| 171408-84-7
Chemical Structure| 171408-84-7
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Product Citations

Product Citations

Guo, Sheng ; Wu, Yifan ; Luo, Shao-Xiong Lennon , et al. DOI:

Abstract: Heterogenous catalysts with confined nanoporous catalytic sites are shown to have high activity and size selectivity. A solution-processable nanoporous organic polymer (1-BPy-Pd) catalyst displays high catalytic performance (TON > 200K) in the heterogeneous Suzuki–Miyaura coupling (SMC) reaction and can be used for the preparation of the intermediates in the synthesis of pharmaceutical agents. In comparison to the homogeneous catalyst analogue (2,2′-BPy)PdCl2, the heterogenous system offers size-dependent catalytic activity when bulkier substrates are used. Furthermore, the catalyst can be used to create catalytic impellers that simplify its use and recovery. We found that this system also works for applications in heterogenous Heck and nitroarenes reduction reactions. The metal-binding nanoporous polymer reported here represents a versatile platform for size-selective heterogeneous and recyclable catalysts.

Keywords: nanoporous organic polymer ; heterogeneous catalyst ; Suzuki?Miyaura coupling reaction ; size-selective reaction ; catalyst processing

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Product Details of [ 171408-84-7 ]

CAS No. :171408-84-7 MDL No. :MFCD08704218
Formula : C25H14Br2 Boiling Point : -
Linear Structure Formula :BrC6H3C(C6H4C6H4)C6H3Br InChI Key :UPJLZKCEPFAKSH-UHFFFAOYSA-N
M.W : 474.19 Pubchem ID :15544767
Synonyms :

Calculated chemistry of [ 171408-84-7 ]      Expand+

Physicochemical Properties

Num. heavy atoms : 27
Num. arom. heavy atoms : 24
Fraction Csp3 : 0.04
Num. rotatable bonds : 0
Num. H-bond acceptors : 0.0
Num. H-bond donors : 0.0
Molar Refractivity : 118.14
TPSA : 0.0 ?2

Pharmacokinetics

GI absorption : Low
BBB permeant : No
P-gp substrate : Yes
CYP1A2 inhibitor : Yes
CYP2C19 inhibitor : Yes
CYP2C9 inhibitor : No
CYP2D6 inhibitor : No
CYP3A4 inhibitor : No
Log Kp (skin permeation) : -3.68 cm/s

Lipophilicity

Log Po/w (iLOGP) : 4.22
Log Po/w (XLOGP3) : 7.76
Log Po/w (WLOGP) : 7.56
Log Po/w (MLOGP) : 7.23
Log Po/w (SILICOS-IT) : 7.89
Consensus Log Po/w : 6.93

Druglikeness

Lipinski : 1.0
Ghose : None
Veber : 0.0
Egan : 1.0
Muegge : 2.0
Bioavailability Score : 0.55

Water Solubility

Log S (ESOL) : -8.33
Solubility : 0.00000224 mg/ml ; 0.0000000047 mol/l
Class : Poorly soluble
Log S (Ali) : -7.6
Solubility : 0.0000118 mg/ml ; 0.0000000249 mol/l
Class : Poorly soluble
Log S (SILICOS-IT) : -11.76
Solubility : 0.0000000008 mg/ml ; 0.0 mol/l
Class : Insoluble

Medicinal Chemistry

PAINS : 0.0 alert
Brenk : 0.0 alert
Leadlikeness : 2.0
Synthetic accessibility : 3.75

Safety of [ 171408-84-7 ]

Signal Word:Warning Class:N/A
Precautionary Statements:P261-P305+P351+P338 UN#:N/A
Hazard Statements:H315-H319-H335 Packing Group:N/A
GHS Pictogram:

Application In Synthesis of [ 171408-84-7 ]

* 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 [ 171408-84-7 ]

[ 171408-84-7 ] Synthesis Path-Downstream   1~15

  • 1
  • [ 188290-36-0 ]
  • [ 171408-84-7 ]
  • 2,7-bis(2-thienyl)-9,9'-spirobifluorene [ No CAS ]
  • 2
  • [ 1081-34-1 ]
  • [ 171408-84-7 ]
  • 2,7-bis(2,2':5',2''-terthiophen-5-yl)-9,9'-spirobifluorene [ No CAS ]
  • 3
  • [ 492-97-7 ]
  • [ 171408-84-7 ]
  • 2,7-bis(2,2'-bithiophen-5-yl)-9,9'-spirobifluorene [ No CAS ]
  • 5
  • [ 122-39-4 ]
  • [ 171408-84-7 ]
  • N,N,N',N'-tetrakisphenyl-9,9'-spirobifluorene-2,7-diamine [ No CAS ]
  • 6
  • 4-hexyl-2-thienylzinc chloride [ No CAS ]
  • [ 171408-84-7 ]
  • [ 445498-67-9 ]
  • 7
  • [ 171408-84-7 ]
  • C20H29ClS2Zn [ No CAS ]
  • [ 445498-69-1 ]
  • 8
  • [ 171408-84-7 ]
  • sodium 4-hexyl-2-thienyl trihydroxyboranuide [ No CAS ]
  • [ 445498-67-9 ]
  • 9
  • [ 171408-84-7 ]
  • C30H43ClS3Zn [ No CAS ]
  • C85H100S6 [ No CAS ]
  • 10
  • [ 171408-85-8 ]
  • [ 171408-84-7 ]
YieldReaction ConditionsOperation in experiment
89% hydrogenchloride; In water; acetic acid; for 12h;Heating / reflux; 2) Synthesis of a compound 2 After the compound 1 (14.28 mmol, 7 g) was dissolved in 70 ml of acetic acid, three drops of concentrated HCl were added thereto, and refluxing was conducted for 12 hours. After the reaction, the resulting mixture was slowly dropped into 250 ml of water to produce a precipitate. After the precipitate was dried, purification was conducted using a developer having hexane and ethyl acetate in a volume ratio of 10:1 to produce a compound 2 (12.72 mmol, 6 g) (Yield 89 percent).
86% With acetic acid; at 120℃; for 24h; Under the protection of argon, add 2,7-dibromofluorenone 10 mmol to the reaction flask.11mmol of 2-fluorobiphenyl and 20ml of tetrahydrofuran solvent, after stirring evenly,22 mmol of lithium metal tablets were added to the reaction solution in batches.Then, the temperature is raised to about 40 ° C, and the reaction is carried out for 24 hours.After the reaction was completed and returned to room temperature, the reaction was quenched with 20 mL of 1N aqueous hydrochloric acid.The organic phase was separated, and the tetrahydrofuran was evaporated to dryness on a rotary evaporator.The crude solid was added to 10 ml of acetic acid.Heating to 120 ° C for 24 hours, after the end of the ring closure reactionFiltration gave crude 2,7-dibromo-9,9'-spirobifluorene.The crude product uses a mixed solvent of dichloromethane and n-hexane as an eluent.Perform column chromatography separation, and the chromatographic silica gel is 200-300 mesh.Finally, the product 2,7-dibromo-9,9'-spirobifluorene 4.08g was obtained.The yield was 86percent.
82% With hydrogenchloride; acetic acid; In water; for 1h;Reflux; 2-iodobiphenyl 1mol was dissolved in THF after the dropwise addition of n-BuLi at -78 a stirred for 1 hour After dropwise dissolving 2,7-dibromo-9H-fluoren-9-one 1mol in THF. The temperature was raised to room temperature and then stirred for one hour to confirm the completion of the reaction and extracted with CH2Cl2 and 1N HCl. The organic layer was dried over MgSO4 to give the Intermediate K was purified by column chromatography and recrystallized (yield 71percent). After the K intermediate was dissolved in acetic acid to complete the addition of concentrated hydrochloric acid for 1 hour under reflux reaction. It was extracted using ether and water and the organic layer was washed with mwot Sat NaHCO3. The organic layer was dried over MgSO4 and purified by column chromatography and recrystallization to give the intermediate L (Yield 82percent).
80% With sulfuric acid; In toluene; at 20℃; for 2h; To 180 g of a toluene solution of 9- (2-biphenyl) -2,7-dibromo-9-fluorene alcohol obtained in Example 3,Concentrated sulfuric acid 18.0 g (0.180 mol, 2.00 M.R.) was charged,The reaction was carried out at room temperature for 2 hours.After caustic water was added to the obtained reaction mixture solution to neutralize it,Toluene was added to crystallize,By filtration and drying,35.9 g of 2,7-dibromo-9,9'-spirobifluorene as white crystals(Yield: 80percent, total yield from Example 3: 72percent, purity: 95percent).
57% With hydrogenchloride; In acetic acid; at 50℃;Heating / reflux; 22 g (45.0 mmol) of 9-biphenyl-2-yl-2,7-dibromo-9-fluorenol, and 100 mL of glacial acetic acid were placed in a 300 mL three-necked flask, several drops of concentrated hydrochloric acid were added, and the mixture was refluxed. After the reaction, the precipitates were filtered The precipitate was recrystallized with ethanol, and 12.3 g of 2,7-dibromo-spiro-9,9'-bifluorene was obtained as a white solid, in a yield of 57percent. [0359]A synthesis scheme (h-4) of 2,7-dibromo-9,9'-spiro-bifluorene is shown below. [0360]
With hydrogenchloride; for 4h;Reflux;Product distribution / selectivity; Diethyl ether (10 mL) was added to magnesium (1.9 g, 25.6 mmol), and 2-bromobiphenyl (5 g, 21.6 mmol) diluted in diethyl ether (20 mL) was slowly added dropwise, and the mixture was stirred under reflux for 3 hours. In diethyl ether (40 mL), dissolved was 2,7-dibromofluorenone (6.7 g, 20 mmol), and the solution was added to the mixture previously prepared. The resultant mixture was stirred under reflux for 12 hours, and cooled to ambient temperature. The precipitate produced was filtered under reduced pressure, and dissolved in acetic acid (40 mL). While heating the solution under reflux, concentrated hydrochloric acid was slowly added dropwise thereto. After four hours, the reaction was completed to give Compound (126) (5.2 g, 10.9 mmol).

  • 11
  • [ 61676-62-8 ]
  • [ 171408-84-7 ]
  • [ 728911-52-2 ]
  • 12
  • [ 171408-84-7 ]
  • [ 317802-08-7 ]
  • polymer; monomer(s): 2,7-bis(1,3,2-dioxaboran-2-yl)-9,9-dioctylfluorene; spiro[fluorene-9,9-2,7-dibromofluorene] [ No CAS ]
  • 13
  • [ 50-00-0 ]
  • [ 171408-84-7 ]
  • [ 773877-89-7 ]
  • 14
  • [ 825655-29-6 ]
  • [ 171408-84-7 ]
  • C151H192 [ No CAS ]
  • 15
  • [ 934708-07-3 ]
  • [ 171408-84-7 ]
  • C77H72O2 [ No CAS ]
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