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Chemical Structure| 24078-12-4 Chemical Structure| 24078-12-4

Structure of 24078-12-4

Chemical Structure| 24078-12-4

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Product Details of [ 24078-12-4 ]

CAS No. :24078-12-4
Formula : C8H7BrO
M.W : 199.04
SMILES Code : BrC1=CC(=C(C=O)C=C1)C
MDL No. :MFCD07787171
Boiling Point : No data available
InChI Key :RCBPVESMGNZMSG-UHFFFAOYSA-N
Pubchem ID :13555150

Safety of [ 24078-12-4 ]

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

Computational Chemistry of [ 24078-12-4 ] Show Less

Physicochemical Properties

Num. heavy atoms 10
Num. arom. heavy atoms 6
Fraction Csp3 0.12
Num. rotatable bonds 1
Num. H-bond acceptors 1.0
Num. H-bond donors 0.0
Molar Refractivity 44.5
TPSA ?

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

17.07 Ų

Lipophilicity

Log Po/w (iLOGP)?

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

1.98
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

2.44
Log Po/w (WLOGP)?

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

2.57
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.

2.52
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

3.12
Consensus Log Po/w?

Consensus Log Po/w: Average of all five predictions

2.52

Water Solubility

Log S (ESOL):?

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

-2.99
Solubility 0.204 mg/ml ; 0.00102 mol/l
Class?

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

Soluble
Log S (Ali)?

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

-2.44
Solubility 0.72 mg/ml ; 0.00362 mol/l
Class?

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

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

-3.59
Solubility 0.0512 mg/ml ; 0.000257 mol/l
Class?

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

Soluble

Pharmacokinetics

GI absorption?

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

High
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

No
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

No
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.

-5.78 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

0.0
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<1.0
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)

1.19

Application In Synthesis of [ 24078-12-4 ]

* 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 [ 24078-12-4 ]

[ 24078-12-4 ] Synthesis Path-Downstream   1~35

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  • [ 858209-29-7 ]
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  • [ 119-26-6 ]
  • [ 24106-06-7 ]
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  • [ 17100-58-2 ]
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YieldReaction ConditionsOperation in experiment
78% [00281] 28B. 4-bromo-2-methylbenzaldehyde: To a solution of oxalyl chloride (249 mL, 497 mmol) in CH2CI2 (150 mL) at -78 C under argon was added a solution of DMSO (42.4 mL, 597 mmol) in CH2C12 (75 mL) dropwise with a venting needle (Note: gas was generated, slow addition was necessary). After the addition, the venting needle was removed. The reaction mixture was stirred at -78 C under argon for 30 min. Then, a solution of 28A (20.0 g, 99.0 mmol) in CH2C12 (203 mL) was added. The resulting solution was stirred at -78 C for 30 min and then TEA (166 mL, 1190 mmol) was added dropwise. The reaction mixture was warmed to rt and stirred for 12 h. The reaction mixture was diluted with water (20 mL) and CH2C12 (30 mL). The layers were separated and the aqueous layer was extracted with CH2C12 (3 x 50 mL). The combined organic extracts were washed with water and brine, dried (MgSC^), filtered, and concentrated. The crude product was purified by flash chromatography to provide 28B (15.4 g, 78 mmol, 78 % yield) as a yellow oil. lH NMR (400 MHz, CDC13) delta 10.22 (s, 1H), 7.66 (d, J= 8.28 Hz, 1H), 7.51 (dd, J= 8.28, 1.76 Hz, 1H), 7.45 (s, 1H), 2.65 (s, 3H).
73% To a solution of ID (9.30 g, 46.3 mmol) in CH2CI2 (200 mL) under argon was added oxalyl chloride (10.1 mL, 116 mmol) at -78 C; then DMSO (9.85 mL, 139 mmol) was added dropwise with a venting needle. After the addition was complete, the venting needle was removed and the reaction mixture was stirred at -78 C under argon for 30 min. Then, NEt3 (38.7 mL, 278 mmol) was added dropwise. After stirring at the same temperature for 3 h, the reaction mixture was diluted with water (20 mL) and CH2C12 (50 mL) and the layers were separated. The aqueous layer was further extracted with CH2CI2 (3 x 100 mL) and the combined organic extracts were washed with water and brine, dried over MgS04, filtered, and concentrated. The crude product was purified by silica chromatography to give IE (yellow oil, 6.70 g, 33.7 mmol, 73% yield). 1H NMR (400 MHz, CDC13) delta 10.22 (1 H, s), 7.66 (1 H, d, J=8.28 Hz), 7.51 (1 H, dd, J=8.28, 1.76 Hz), 7.45 (1 H, s), 2.65 (3 H, s).
With pyridinium chlorochromate; In dichloromethane; at 20℃; for 1h; [0453] Experimental Details: A solution of 2.4g (11.9mmol) of compound 2 in20ml of DCM was added a slurry of 5.1g(23.8mmol) of PCC in 60ml of DCM. The reaction solution was stirred for lhour at r.t. diluted with 300ml OfEt2O and filtered. The filtrate was concentrated to give compound 3.
With pyridinium chlorochromate; In dichloromethane; at 20℃; for 1h; Experimental Details: A solution of 2.4 g (11.9 mmol) of compound 2 in 20 ml of DCM was added a slurry of 5.1 g (23.8 mmol) of PCC in 60 ml of DCM. The reaction solution was stirred for 1 hour at r.t. diluted with 300 ml of Et2O and filtered. The filtrate was concentrated to give compound 3.
With manganese(IV) oxide; In dichloromethane; at 20℃; for 72h; Manganese dioxide (360 g, 4.1 mol) was added to a solution of (4-bromo-2-methylphenyl)methanol (91.5 g, 455 mmol) in dichloromethane (500 mL) and the reaction was stirred at room temperature for 72 h. The reaction mixture was filtered through Celite and the filtrate was concentrated in vacuo. The residue was purified via chromatography (5% ethyl acetate/hex), providing the product, 4-bromo-2-methylbenzaldehyde, as a yellow solid. 1H NMR (400 MHz, CDCl3) delta 2.64 (s, 3H), 7.43 (s, 1H), 7.49 (d, J=8.3 Hz, 1H), 7.65 (d, J=8.3 Hz, 1H), 10.20 (s, 1H).
With Dess-Martin periodane; In dichloromethane; at 0 - 30℃; for 1h; To the solution of (4-bromo-2-methylphenyl)methanol (1.8 g, 8.1 mmol) in CH2C12 (20 mL) was added Dess-Martin Periodinane (5,1 g, 12.1 mmol) at 0C. The mixture was stirred at RT for 1 h, then diluted with water, and the solid was removed by filtration. The filtrate was extracted with CH2C12. The combined organic layer was washed with brine, dried over Na2S04 and concentrated in vacuo. Purification by normal phase silica gel column provided 4-bromo-2- methylbenzaldehyde as a yellow oil.

  • 6
  • [ 24078-12-4 ]
  • [ 107-21-1 ]
  • [ 91587-27-8 ]
  • 7
  • [ 141-82-2 ]
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  • [ 91445-82-8 ]
  • 8
  • [ 75-17-2 ]
  • [ 583-75-5 ]
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  • 9
  • [ 591-17-3 ]
  • [ 100-97-0 ]
  • [ 824-54-4 ]
  • [ 24078-12-4 ]
  • [ 176504-70-4 ]
  • 10
  • [ 24078-12-4 ]
  • potassium salt of/the/ <4-bromo-2-methyl-phenyl>-acetic acid [ No CAS ]
  • 4,4'-dibromo-2,2'-dimethyl-<i>trans</i>-stilbene [ No CAS ]
  • 11
  • [ 24078-12-4 ]
  • potassium-salt of/the/ <4-bromo-2-methyl-phenyl>-acetic acid [ No CAS ]
  • [ 878654-40-1 ]
  • 12
  • [ 24078-12-4 ]
  • aqueous ethanol hydrazine hydrate solution [ No CAS ]
  • bis-(4-bromo-2-methyl-benzylidene)-hydrazine [ No CAS ]
  • 13
  • [ 547-63-7 ]
  • [ 24078-12-4 ]
  • 3-(4-bromo-2-methyl-phenyl)-3-hydroxy-2,2-dimethyl-propionic acid methyl ester [ No CAS ]
  • 15
  • [ 67832-11-5 ]
  • [ 24078-12-4 ]
YieldReaction ConditionsOperation in experiment
Description 91; 4-Bromo-2-methylbenzaldehyde (D91); To 4-bromo-2-methylbenzonitrile (2 g, 10.2 mmol) in toluene (60 mL) cooled to 5 C under argon was added Dibal-H (11.2 mL, 1M solution in toluene, 11.2 mmol) dropwise. The reaction was stirred at 50C for 30 minutes then MeOH (3 mL) and 2 M H2SO4 (10 mL) were added dropwise. The mixture was stirred for ~19h then concentrated in vacuo. The residue was re-dissolved in water/EtOAc. The organic layer was dried and concentrated to give the crude title compound as a brown oil <n="88"/>(1.81 g) which was used in the next step without further purification. 6H (CDCI3, 400MHz) 10.20 (1 H, s), 7.65 (1H, d), 7.50 (1 H1 dd), 7.43 (1 H, m), 2.64 (3H, s).
With diisobutylaluminium hydride; In hexane; at -78 - 20℃; for 1.5h; To a solution of 4-bromo-3-methylbenzonitrile (0.975 g; 5.00 mmol) in anhyd CH2Cl2(7.5 mL) at -40 C. was added DIBAL-H (7.5 mL of a 1M solution in hexanes; 7.5 mmol), dropwise over 5 min. The mixture was stirred 30 min at -40 C., removed from the cooling bath and stirred 1 h at rt. The mixture was cooled in an ice bath, and excess hydride was quenched by dropwise addition of MeOH. After stirring 20 min, Rochelle's salt (satd aq. solution) was added, the mixture was stirred at rt overnight, and the layers were separated. The aqueous layer was extracted with CH2Cl2(×2), combined organics were washed (H2O, brine), dried over Na2SO4, filtered and concentrated in vacuo. The residue was purified by flash chromatography (EtOAc/hexanes), affording the title compound as a colorless solid (Note 1). Note 1 The title compound was oxidized rapidly on standing in air to a mixture of benzaldehyde and benzoic acid. The title compound was prepared from 4-bromo-2-methylbenzonitrile according to the procedure described for Example I-IX-1 with exceptions as follows: the reaction temperature was -78 C. (instead of -40 C.); the reaction was quenched with MeOH at -78 C. (instead of ice bath temp), followed by addition of 6M HCl at -78 C. (instead of satd Rochelle's salt); after quenching the reaction mixture was stirred 30 min at room temperature (instead of overnight). Colorless oil;
  • 16
  • [ 24078-12-4 ]
  • [ 144807-49-8 ]
YieldReaction ConditionsOperation in experiment
Description 93; 2-Methyl-4-(methylamino)benzaldehyde (D93); To 1 ,1-dimethylethyl (4-formyl-3-methylphenyl)methylcarbamate (D92) (0.614 g, 2.47 mmol) in DCM (60 ml_) at room temperature under argon was added TFA (15 mL) dropwise. The mixture was stirred for 0.5 h then concentrated. The residue was re- dissolved in DCM and water and the aqueous layer was basified with NaOH solution. The DCM layer was separated, dried (Na2SO4) and concentrated to give the crude title compound as a yellow oil (0.397 g) which was used in the next step without further purification. deltaH (CDCI3, 400MHz) 9.98 (1 H1 s), 7.63 (1H, d), 6.47 (1H, dd), 6.35 (1H, d), 4.35 (1 H, br.s), 2.91 (3H1 d), 2.60 (3H, s). MS (ES): MH+ 150.1.
  • 19
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  • [ 908014-88-0 ]
  • 20
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  • [ 644985-26-2 ]
  • 21
  • [ 24078-12-4 ]
  • 5-(4-amino-2-methyl-phenyl)-4,4-dimethyl-2,4-dihydro-pyrazol-3-one [ No CAS ]
  • 22
  • [ 24078-12-4 ]
  • 3-(4-benzyloxycarbonylamino-2-methyl-phenyl)-2,2-dimethyl-3-oxo-propionic acid methyl ester [ No CAS ]
  • 23
  • [ 24078-12-4 ]
  • [ 644985-31-9 ]
  • 24
  • [ 24078-12-4 ]
  • 5-[4-(2-benzyl-3-oxo-cyclohex-1-enylamino)-2-methyl-phenyl]-4,4-dimethyl-2,4-dihydro-pyrazol-3-one [ No CAS ]
  • 25
  • [ 24078-12-4 ]
  • 3-{2-[4-(4,4-dimethyl-5-oxo-4,5-dihydro-1<i>H</i>-pyrazol-3-yl)-3-methyl-phenylamino]-6-oxo-cyclohex-1-enylmethyl}-benzonitrile [ No CAS ]
  • 28
  • [ 24078-12-4 ]
  • [ 91587-35-8 ]
  • 33
  • [ 24078-12-4 ]
  • [ 879407-83-7 ]
 

Historical Records

Technical Information

• Alkyl Halide Occurrence • Barbier Coupling Reaction • Baylis-Hillman Reaction • Benzylic Oxidation • Birch Reduction • Blanc Chloromethylation • Bucherer-Bergs Reaction • Clemmensen Reduction • Complex Metal Hydride Reductions • Corey-Chaykovsky Reaction • Corey-Fuchs Reaction • Fischer Indole Synthesis • Friedel-Crafts Reaction • General Reactivity • Grignard Reaction • Hantzsch Dihydropyridine Synthesis • Henry Nitroaldol Reaction • Hiyama Cross-Coupling Reaction • Horner-Wadsworth-Emmons Reaction • Hydride Reductions • Hydrogenolysis of Benzyl Ether • Julia-Kocienski Olefination • Kinetics of Alkyl Halides • Knoevenagel Condensation • Kumada Cross-Coupling Reaction • Leuckart-Wallach Reaction • McMurry Coupling • Meerwein-Ponndorf-Verley Reduction • Mukaiyama Aldol Reaction • Nozaki-Hiyama-Kishi Reaction • Passerini Reaction • Paternò-Büchi Reaction • Petasis Reaction • Pictet-Spengler Tetrahydroisoquinoline Synthesis • Preparation of Aldehydes and Ketones • Preparation of Alkylbenzene • Preparation of Amines • Prins Reaction • Reactions of Aldehydes and Ketones • Reactions of Alkyl Halides with Reducing Metals • Reactions of Amines • Reactions of Benzene and Substituted Benzenes • Reactions of Dihalides • Reformatsky Reaction • Schlosser Modification of the Wittig Reaction • Schmidt Reaction • Stetter Reaction • Stille Coupling • Stobbe Condensation • Substitution and Elimination Reactions of Alkyl Halides • Suzuki Coupling • Tebbe Olefination • Ugi Reaction • Vilsmeier-Haack Reaction • Wittig Reaction • Wolff-Kishner Reduction

Categories

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[ 24078-12-4 ]

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