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Chemical Structure| 78775-11-8 Chemical Structure| 78775-11-8

Structure of 78775-11-8

Chemical Structure| 78775-11-8

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Product Details of [ 78775-11-8 ]

CAS No. :78775-11-8
Formula : C8H7BrO
M.W : 199.04
SMILES Code : BrC1=C(C=C(C=O)C=C1)C
MDL No. :MFCD07787170
Boiling Point : No data available
InChI Key :YBXGUHGVNUFFJU-UHFFFAOYSA-N
Pubchem ID :10921521

Safety of [ 78775-11-8 ]

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

Computational Chemistry of [ 78775-11-8 ] 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.

1.92
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

2.67
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

2.56

Water Solubility

Log S (ESOL):?

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

-3.13
Solubility 0.146 mg/ml ; 0.000734 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.

-2.68
Solubility 0.416 mg/ml ; 0.00209 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.

-5.62 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)

1.09

Application In Synthesis of [ 78775-11-8 ]

* 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 [ 78775-11-8 ]

[ 78775-11-8 ] Synthesis Path-Downstream   1~35

  • 1
  • [ 41963-20-6 ]
  • [ 78775-11-8 ]
YieldReaction ConditionsOperation in experiment
Preparation of Intermediate 4-Bromo-3-methyl-benzaldehvde (l-2a):The starting material (4-bromo-3-methyl-benzonitrile, 12.8g, 65.3 mmol) was dissolved in toluene (120 ml_) and dichloromethane (20 mL) and cooled to -600C as a 1.5M diisobutylaluminum hydride in toluene (67 mL, 100 mmol) was added dropwise over 30 minutes keeping the temperature between -60 and -500C. The reaction was allowed to warm slowly to room temperature and stirred for an additional 3 hours. The reaction was quenched by adding ethyl acetate and stirring for 20 minutes before the addition of 1 N aqueous hydrochloric acid at 0°C. The reaction mixture was then allowed to warm slowly to room temperature before extractive workup in the usual manner using ethyl acetate (2 times). The combined organic layers were washed with brine, dried over sodium sulfate, filtered and concentrated under reduced pressure. The residue was purified by chromatography on silica eluting with 5percent ethyl acetate in heptane to yield 5.6 g of the title compound (l-2a).1H NMR (CDCI3): delta 2.47 (s, 3H), 7.54 (dd, 1 H), 7.69-7.72 (m, 2H), 9.94 (s, 1H)
Example II: Preparation of 4-bromo-3-methyl-benzaldehvde; A solution of 4-bromo-3-methyl-benzonitrile (500 mg) in dichloromethane was added at 0°C to a solution of diisobutylaluminium hydride ("DIBAL-H") in hexanes (IM) (2.6 ml). The reaction mixture was stirred at 0°C for 2 hours. The reaction mixture was poured on a mixture of ice (10 g) and aqueous hydrobromic acid (6M) (10 ml). The mixture was allowed to warm to ambient temperature and then extracted twice with dichloromethane. The combined organic phases were washed with water, dried over sodium sulfate, and concentrated to give 4-bromo-3-methyl-benzaldehyde (0.419 g) as a colorless oil. 1H-NMR (400 MHz, CDCl3): 9.95 (s, IH), 7.72 (m, 2H), 7.55 (d, IH), 2.50 (s, 3H) ppm.
Example Il : Preparation of 4-bromo-3-methyl-benzaldehyde; A solution of 4-bromo-3-methyl-benzonitrile (commercially available) (500 mg) in dichloromethane was added at 0°C to a solution of diisobutylaluminium hydride ("DIBAL- H") (2.6.ml) in hexanes (IM). The mixture was stirred at 0°C for 2 hours. The reaction mixture was poured on a mixture of ice (10 g) and aqueous hydrobromic acid (6M) (10 ml). The mixture was allowed to warm to ambient temperature and then extracted twice with dichloromethane. The combined organic phases were washed with water, dried over sodium sulfate, and concentrated to give 4-bromo-3-methyl-benzaldehyde (0.419 g) as a colorless oil. 1H-NMR (400 MHz, CDCl3): 9.95 (s, IH), 7.72 (m, 2H), 7.55 (d, IH), 2.50 (s, 3H) ppm.
A solution of 4-bromo-3-methyl-benzonitrile (commercially available) (500 mg) in dichloromethane (7.5 ml) was added at 00C to a solution of diisobutylaluminium hydride ("DIBAL-H") (2.6. ml) in hexanes (IM). The reaction mixture was stirred at 00C for 2 hours. The reaction mixture was poured on a mixture of ice (10 g) and aqueous hydrobromic acid (6M) (10 ml). The mixture was allowed to warm to ambient temperature and then extracted twice with dichloromethane. The combined organic phases were washed with water, dried over sodium sulfate, and concentrated to give 4-bromo-3-methyl-benzaldehyde (0.419 g) as a colorless oil. 1H-NMR (400 MHz, CDCl3): 9.95 (s, IH), 7.72 (m, 2H), 7.55 (d, IH), 2.50 (s, 3H) ppm.
With diisobutylaluminium hydride; In hexane; at -40 - 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.

  • 2
  • [ 78775-11-8 ]
  • [ 79257-61-7 ]
  • 4-bromo-N-(3,5-dimethoxyphenyl)-3-methylcinnamamide [ No CAS ]
  • 3
  • [ 78775-11-8 ]
  • [ 126-30-7 ]
  • [ 146308-28-3 ]
  • 4
  • [ 78775-11-8 ]
  • [ 122-51-0 ]
  • [ 75986-22-0 ]
  • 5
  • [ 75-17-2 ]
  • [ 6933-10-4 ]
  • [ 78775-11-8 ]
  • 6
  • [ 141-82-2 ]
  • [ 78775-11-8 ]
  • [ 90772-60-4 ]
  • 7
  • [ 78775-11-8 ]
  • [ 5674-02-2 ]
  • 1-(4-Bromo-3-methyl-phenyl)-3-methyl-butan-1-ol [ No CAS ]
  • 8
  • [ 78775-11-8 ]
  • [ 925-90-6 ]
  • 1-(4-Bromo-3-methyl-phenyl)-propan-1-ol [ No CAS ]
  • 9
  • [ 78775-11-8 ]
  • [ 1068-55-9 ]
  • 1-(4-Bromo-3-methyl-phenyl)-2-methyl-propan-1-ol [ No CAS ]
  • 10
  • [ 149104-89-2 ]
  • [ 78775-11-8 ]
YieldReaction ConditionsOperation in experiment
89% With manganese(IV) oxide; In dichloromethane; at 20℃; for 12h; Step 3: Preparation of 4-bromo-3-methylbenzaldehyde To a solution of (4-bromo-3-methylphenyl)methanol (420 mg, 2.09 mmol) in DCM (6 mL) at rt was added MnO2 (1.82 g, 20.9 mmol). The reaction mixture was stirred for 12 h, filtered and concentrated under reduced pressure to give 4-bromo-3-methyl-benzaldehyde (372 mg; yield 89percent) as an oil.
With manganese(IV) oxide; In dichloromethane; at 20℃; for 12h; 3.7 g (43 mmol, 10 eq) of manganese dioxide are added to a solution of 900 mg (4.3 mmol, 1 eq) of (4-bromo-3-methylphenyl)methanol in 8 mL of dichloromethane. The reaction mixture is stirred for 12 hours at room temperature. The solid is filtered off and the solvent is evaporated off. 900 mg of 4-bromo-3-methylbenzaldehyde are obtained in oil form and used in the following reaction without further purification
  • 11
  • [ 3095-95-2 ]
  • [ 78775-11-8 ]
  • 3-(4-bromo-3-methylphenyl)acrylic acid [ No CAS ]
  • 13
  • [ 78775-11-8 ]
  • 2-(diethylphosphono)butyric acid [ No CAS ]
  • 3-(4-bromo-3-methylphenyl)-2-ethylacrylic acid [ No CAS ]
  • 14
  • [ 78775-11-8 ]
  • [ 176961-13-0 ]
  • [ 254744-26-8 ]
  • 15
  • [ 78775-11-8 ]
  • [ 100945-15-1 ]
  • [ 905281-17-6 ]
  • 16
  • [ 78775-11-8 ]
  • [ 850321-21-0 ]
  • 17
  • [ 78775-11-8 ]
  • [ 850321-16-3 ]
  • 18
  • [ 78775-11-8 ]
  • [ 850321-18-5 ]
  • 19
  • [ 78775-11-8 ]
  • [ 850321-17-4 ]
  • 20
  • [ 78775-11-8 ]
  • [ 850321-19-6 ]
  • 21
  • [ 78775-11-8 ]
  • [ 850321-20-9 ]
  • 23
  • [ 7697-28-1 ]
  • sodium amalgam [ No CAS ]
  • [ 78775-11-8 ]
  • 24
  • [ 78775-11-8 ]
  • [ 73206-52-7 ]
  • 25
  • [ 78775-11-8 ]
  • 1-Bromo-2-methyl-4-propyl-benzene [ No CAS ]
  • 26
  • [ 78775-11-8 ]
  • 1-Bromo-2-methyl-4-(3-methyl-butyl)-benzene [ No CAS ]
  • 27
  • [ 78775-11-8 ]
  • Acetic acid 1-(4-bromo-3-methyl-phenyl)-propyl ester [ No CAS ]
  • 28
  • [ 78775-11-8 ]
  • Acetic acid 1-(4-bromo-3-methyl-phenyl)-2-methyl-propyl ester [ No CAS ]
  • 29
  • [ 78775-11-8 ]
  • Acetic acid 1-(4-bromo-3-methyl-phenyl)-3-methyl-butyl ester [ No CAS ]
  • 30
  • [ 78775-11-8 ]
  • [ 185329-93-5 ]
  • 31
  • [ 78775-11-8 ]
  • 3-(2-Methyl-4-propyl-phenyl)-thiophene-2-sulfonic acid [ No CAS ]
  • 32
  • [ 78775-11-8 ]
  • [ 185329-94-6 ]
  • 33
  • [ 78775-11-8 ]
  • 3-(4-Isobutyl-2-methyl-phenyl)-thiophene-2-sulfonic acid [ No CAS ]
  • 34
  • [ 78775-11-8 ]
  • [ 185329-95-7 ]
  • 35
  • [ 78775-11-8 ]
  • 3-[2-Methyl-4-(3-methyl-butyl)-phenyl]-thiophene-2-sulfonic acid [ No CAS ]
 

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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[ 78775-11-8 ]

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