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Structure of 29079-00-3

Chemical Structure| 29079-00-3

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Product Citations

Product Citations      Show More

Zhumin Zhang ; Jordan L. Chasteen ; Bradley D. Smith ;

Abstract: The chemosensor literature contains many reports of fluorescence sensing using polyaromatic hydrocarbon fluorophores such as pyrene, , or polyaryl(ethynylene), where the fluorophore is excited with ultraviolet light (<400 nm) and emits in the visible region of 400–500 nm. There is a need for general methods that convert these “turn-on” hydrocarbon fluorescent sensors into ratiometric sensing paradigms. One simple strategy is to mix the responsive hydrocarbon sensor with a second non-responsive dye that is excited by ultraviolet light but emits at a distinctly longer wavelength and thus acts as a reference signal. Five new cyanine dye cassettes were created by covalently attaching a pyrene, , or biphenyl(ethynylene) component as the ultraviolet-absorbing energy donor directly to the pentamethine chain of a deep-red cyanine (Cy5) energy acceptor. Fluorescence emission studies showed that these Cy5-cassettes exhibited large pseudo-Stokes shifts and high through-bond energy transfer efficiencies upon excitation with ultraviolet light. Practical potential was demonstrated with two examples of ratiometric fluorescence sensing using a single ultraviolet excitation wavelength. One example mixed a Cy5-cassette with a pyrene-based fluorescent indicator that responded to changes in Cu2+ concentration, and the other example mixed a Cy5-cassette with the fluorescent pH sensing dye, .

Krzysztof Kuciński ; Grzegorz Hreczycho ;

Abstract: Commercially available and inexpensive potassium bis(trimethylsilyl)amide (KHMDS) serves as an efficient transition metal-free catalyst for the catalytic sp C−H silylation of several terminal alkynes including two pharmaceuticals. Overall, the presented system allows the synthesis of various attractive silylacetylenes under mild conditions, making this approach an environmentally benign and sustainable alternative to existing synthetic solutions.

Alternative Products

Product Details of [ 29079-00-3 ]

CAS No. :29079-00-3
Formula : C14H10
M.W : 178.23
SMILES Code : C2=C(C1=CC=CC=C1)C=CC(=C2)C#C
MDL No. :MFCD00102191
InChI Key :BPBNKCIVWFCMJY-UHFFFAOYSA-N
Pubchem ID :34464

Safety of [ 29079-00-3 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H302-H315-H319-H332-H335
Precautionary Statements:P261-P280-P305+P351+P338

Computational Chemistry of [ 29079-00-3 ] Show Less

Physicochemical Properties

Num. heavy atoms 14
Num. arom. heavy atoms 12
Fraction Csp3 0.0
Num. rotatable bonds 1
Num. H-bond acceptors 0.0
Num. H-bond donors 0.0
Molar Refractivity 59.81
TPSA ?

Topological Polar Surface Area: Calculated from
Ertl P. et al. 2000 J. Med. Chem.

0.0 Ų

Lipophilicity

Log Po/w (iLOGP)?

iLOGP: in-house physics-based method implemented from
Daina A et al. 2014 J. Chem. Inf. Model.

2.68
Log Po/w (XLOGP3)?

XLOGP3: Atomistic and knowledge-based method calculated by
XLOGP program, version 3.2.2, courtesy of CCBG, Shanghai Institute of Organic Chemistry

4.51
Log Po/w (WLOGP)?

WLOGP: Atomistic method implemented from
Wildman SA and Crippen GM. 1999 J. Chem. Inf. Model.

3.41
Log Po/w (MLOGP)?

MLOGP: Topological method implemented from
Moriguchi I. et al. 1992 Chem. Pharm. Bull.
Moriguchi I. et al. 1994 Chem. Pharm. Bull.
Lipinski PA. et al. 2001 Adv. Drug. Deliv. Rev.

5.24
Log Po/w (SILICOS-IT)?

SILICOS-IT: Hybrid fragmental/topological method calculated by
FILTER-IT program, version 1.0.2, courtesy of SILICOS-IT, http://www.silicos-it.com

4.24
Consensus Log Po/w?

Consensus Log Po/w: Average of all five predictions

4.02

Water Solubility

Log S (ESOL):?

ESOL: Topological method implemented from
Delaney JS. 2004 J. Chem. Inf. Model.

-4.35
Solubility 0.00788 mg/ml ; 0.0000442 mol/l
Class?

Solubility class: Log S scale
Insoluble < -10 < Poorly < -6 < Moderately < -4 < Soluble < -2 Very < 0 < Highly

Moderately soluble
Log S (Ali)?

Ali: Topological method implemented from
Ali J. et al. 2012 J. Chem. Inf. Model.

-4.23
Solubility 0.0105 mg/ml ; 0.0000587 mol/l
Class?

Solubility class: Log S scale
Insoluble < -10 < Poorly < -6 < Moderately < -4 < Soluble < -2 Very < 0 < Highly

Moderately soluble
Log S (SILICOS-IT)?

SILICOS-IT: Fragmental method calculated by
FILTER-IT program, version 1.0.2, courtesy of SILICOS-IT, http://www.silicos-it.com

-4.99
Solubility 0.00181 mg/ml ; 0.0000101 mol/l
Class?

Solubility class: Log S scale
Insoluble < -10 < Poorly < -6 < Moderately < -4 < Soluble < -2 Very < 0 < Highly

Moderately soluble

Pharmacokinetics

GI absorption?

Gatrointestinal absorption: according to the white of the BOILED-Egg

Low
BBB permeant?

BBB permeation: according to the yolk of the BOILED-Egg

Yes
P-gp substrate?

P-glycoprotein substrate: SVM model built on 1033 molecules (training set)
and tested on 415 molecules (test set)
10-fold CV: ACC=0.72 / AUC=0.77
External: ACC=0.88 / AUC=0.94

No
CYP1A2 inhibitor?

Cytochrome P450 1A2 inhibitor: SVM model built on 9145 molecules (training set)
and tested on 3000 molecules (test set)
10-fold CV: ACC=0.83 / AUC=0.90
External: ACC=0.84 / AUC=0.91

Yes
CYP2C19 inhibitor?

Cytochrome P450 2C19 inhibitor: SVM model built on 9272 molecules (training set)
and tested on 3000 molecules (test set)
10-fold CV: ACC=0.80 / AUC=0.86
External: ACC=0.80 / AUC=0.87

Yes
CYP2C9 inhibitor?

Cytochrome P450 2C9 inhibitor: SVM model built on 5940 molecules (training set)
and tested on 2075 molecules (test set)
10-fold CV: ACC=0.78 / AUC=0.85
External: ACC=0.71 / AUC=0.81

Yes
CYP2D6 inhibitor?

Cytochrome P450 2D6 inhibitor: SVM model built on 3664 molecules (training set)
and tested on 1068 molecules (test set)
10-fold CV: ACC=0.79 / AUC=0.85
External: ACC=0.81 / AUC=0.87

No
CYP3A4 inhibitor?

Cytochrome P450 3A4 inhibitor: SVM model built on 7518 molecules (training set)
and tested on 2579 molecules (test set)
10-fold CV: ACC=0.77 / AUC=0.85
External: ACC=0.78 / AUC=0.86

No
Log Kp (skin permeation)?

Skin permeation: QSPR model implemented from
Potts RO and Guy RH. 1992 Pharm. Res.

-4.19 cm/s

Druglikeness

Lipinski?

Lipinski (Pfizer) filter: implemented from
Lipinski CA. et al. 2001 Adv. Drug Deliv. Rev.
MW ≤ 500
MLOGP ≤ 4.15
N or O ≤ 10
NH or OH ≤ 5

1.0
Ghose?

Ghose filter: implemented from
Ghose AK. et al. 1999 J. Comb. Chem.
160 ≤ MW ≤ 480
-0.4 ≤ WLOGP ≤ 5.6
40 ≤ MR ≤ 130
20 ≤ atoms ≤ 70

None
Veber?

Veber (GSK) filter: implemented from
Veber DF. et al. 2002 J. Med. Chem.
Rotatable bonds ≤ 10
TPSA ≤ 140

0.0
Egan?

Egan (Pharmacia) filter: implemented from
Egan WJ. et al. 2000 J. Med. Chem.
WLOGP ≤ 5.88
TPSA ≤ 131.6

0.0
Muegge?

Muegge (Bayer) filter: implemented from
Muegge I. et al. 2001 J. Med. Chem.
200 ≤ MW ≤ 600
-2 ≤ XLOGP ≤ 5
TPSA ≤ 150
Num. rings ≤ 7
Num. carbon > 4
Num. heteroatoms > 1
Num. rotatable bonds ≤ 15
H-bond acc. ≤ 10
H-bond don. ≤ 5

2.0
Bioavailability Score?

Abbott Bioavailability Score: Probability of F > 10% in rat
implemented from
Martin YC. 2005 J. Med. Chem.

0.55

Medicinal Chemistry

PAINS?

Pan Assay Interference Structures: implemented from
Baell JB. & Holloway GA. 2010 J. Med. Chem.

0.0 alert
Brenk?

Structural Alert: implemented from
Brenk R. et al. 2008 ChemMedChem

1.0 alert: heavy_metal
Leadlikeness?

Leadlikeness: implemented from
Teague SJ. 1999 Angew. Chem. Int. Ed.
250 ≤ MW ≤ 350
XLOGP ≤ 3.5
Num. rotatable bonds ≤ 7

No; 1 violation:MW<2.0
Synthetic accessibility?

Synthetic accessibility score: from 1 (very easy) to 10 (very difficult)
based on 1024 fragmental contributions (FP2) modulated by size and complexity penaties,
trained on 12'782'590 molecules and tested on 40 external molecules (r2 = 0.94)

2.08

Application In Synthesis of [ 29079-00-3 ]

* 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 [ 29079-00-3 ]

[ 29079-00-3 ] Synthesis Path-Downstream   1~2

  • 1
  • [ 124-38-9 ]
  • [ 29079-00-3 ]
  • [ 32340-38-8 ]
YieldReaction ConditionsOperation in experiment
92% General procedure: The terminal alkyne (1.0 mmol) was added to a mixtureof HSi(OEt)2Me (5.0 mmol) and KOtBu (1.5 mmol) in a10 mL Schlenk tube with a magnetic stirrer. The Schlenktube was evacuated and back-filled with CO2 for 3 times.After a CO2 ballon was connected, the reactor was moved toa water bath of 40 C. After being stirred for 2 h, the reactionmixture was diluted with water (30 mL), and was extractedwith CH2Cl2 (3×10 mL). The aqueous layer was acidifiedwith aqueous HCl (6 M) and then extracted with diethylether (5×20 mL). The combined organic extracts were driedover Na2SO4 and concentrated under vacuum to give the purepropiolic acid (such as compound 3-phenylpropiolic acid(3a): 98%).
88% Sequentially adding a catalyst in the reaction bottle (14.0 mg, 0.025 millimole, 5mol %), cesium carbonate (32.6 mg, 1.0 mmol), 4-ethynyl biphenyl (89.1 mg, 0.5 mmol),N,N-dimethylformamide(3 ml), into the carbon dioxide, in the 65 C, reaction under normal pressure 18 hours. Reaction cooling to room temperature, diluted with water, acidified with hydrochloric acid, diethyl ether extraction, washing with saturated sodium chloride for ether level, dry anhydrous sodium sulfate, obtained product is vacuum to remove the solvent, the yield is 88%.
86% With caesium carbonate; In dimethyl sulfoxide; at 60℃; for 24h;Sealed tube; Inert atmosphere; Under sealed conditions without water and oxygen, argon protection,0.6516 g of Cs2CO3 (2 mmol, 2 equiv.) was weighed into the reaction flask.A small syringe was charged with 0.1782 g (1 mmol, 1 equiv.) of 4-ethynylbiphenyl.The syringe was added with 5 mL of DMSO, and the CO 2 gas was used to displace the air in the reaction system.The reaction was carried out at 60 C for 24 h. After the reaction, the mixture was exposed to air, cooled slightly at room temperature, and then cooled in an ice water bath.Add 10 mL of deionized water, and add 20 mL of 6 mol/L HCl solution to fully acidify.The organic phase was combined and the organic phase was washed with brine brine.The organic phase is separated and dried with anhydrous Na2SO4.The solvent is removed under reduced pressure to obtain the desired product.The isolated yield was 86%.
83% With caesium carbonate; In dimethyl sulfoxide; at 60℃; under 760.051 Torr; for 24h; Add 4 ml of dimethyl sulfoxide, 1 mmol of 4-ethynylbiphenyl, 2 mmol of cesium carbonate into the reaction tube,The reaction tube was pumped and ventilated 3 times, and filled with CO2. After the CO2 was filled, the gas pressure of the reaction tube was 1 atm. The reaction tube was stirred for 24 hours under the conditions of carbon dioxide atmosphere and 60C. The stirring rate is 800 rpm, stop stirring, and cool to room temperature.Add water to the reaction solution, extract 4 times with ethyl acetate, separate the layers, take the aqueous layer, acidify the aqueous layer with 2 moles of hydrochloric acid per liter to pH=1, then extract with ethyl acetate, take the organic layer, and wash the organic layer with saturated brine It was dried over magnesium sulfate, the filtrate was filtered, and concentrated under reduced pressure to obtain the target product with a yield of 83%.

  • 2
  • [ 13211-01-3 ]
  • [ 29079-00-3 ]
 

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Technical Information

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