[ CAS No. 71838-16-9 ] {[proInfo.proName]}

Name: 71838-16-9|2-Bromo-1-iodo-4-methylbenzene|98%
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3d Animation Molecule Structure of 71838-16-9

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Quality Control of [ 71838-16-9 ]

COA NMR CNMR HPLC LC-MS

Related Doc. of [ 71838-16-9 ]

SDS Specification

Alternatived Products of [ 71838-16-9 ]

Product Details of [ 71838-16-9 ]

CAS No. :	71838-16-9	MDL No. :	MFCD00079718
Formula :	C₇H₆BrI	Boiling Point :	-
Linear Structure Formula :	-	InChI Key :	PLAKKSAFIZVHJP-UHFFFAOYSA-N
M.W :	296.93	Pubchem ID :	626634
Synonyms :

Calculated chemistry of [ 71838-16-9 ]

Physicochemical Properties

Num. heavy atoms :	9
Num. arom. heavy atoms :	6
Fraction Csp3 :	0.14
Num. rotatable bonds :	0
Num. H-bond acceptors :	0.0
Num. H-bond donors :	0.0
Molar Refractivity :	51.82
TPSA :	0.0 Å²

Pharmacokinetics

GI absorption :	Low
BBB permeant :	Yes
P-gp substrate :	No
CYP1A2 inhibitor :	Yes
CYP2C19 inhibitor :	No
CYP2C9 inhibitor :	Yes
CYP2D6 inhibitor :	No
CYP3A4 inhibitor :	No
Log Kp (skin permeation) :	-5.53 cm/s

Lipophilicity

Log Po/w (iLOGP) :	2.53
Log Po/w (XLOGP3) :	3.63
Log Po/w (WLOGP) :	3.36
Log Po/w (MLOGP) :	4.25
Log Po/w (SILICOS-IT) :	3.95
Consensus Log Po/w :	3.54

Druglikeness

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

Water Solubility

Log S (ESOL) :	-4.46
Solubility :	0.0103 mg/ml ; 0.0000346 mol/l
Class :	Moderately soluble
Log S (Ali) :	-3.32
Solubility :	0.143 mg/ml ; 0.000481 mol/l
Class :	Soluble
Log S (SILICOS-IT) :	-4.58
Solubility :	0.00786 mg/ml ; 0.0000265 mol/l
Class :	Moderately soluble

Medicinal Chemistry

PAINS :	0.0 alert
Brenk :	1.0 alert
Leadlikeness :	1.0
Synthetic accessibility :	2.03

Safety of [ 71838-16-9 ]

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 [ 71838-16-9 ]

* 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 [ 71838-16-9 ]
Downstream synthetic route of [ 71838-16-9 ]

[ 71838-16-9 ] Synthesis Path-Upstream 1~4

1
[ 583-68-6 ]
[ 71838-16-9 ]

Yield	Reaction Conditions	Operation in experiment
92%	Stage #1: With hydrogenchloride; sodium nitrite In water; acetonitrile at 0 - 5℃; for 0.5 h; Stage #2: With potassium iodide In water; acetonitrile at 20℃;	General procedure: To a solution of 2-bromoaniline (5 g, 29 mmol) dissolved in CH3CN (80 mL) was added aq. HCl (15 mL conc. HCl in 50 mL water), then the mixture was cooled to 0 °C, and it was added a solution of NaNO2 (2.4 g, 34.87 mmol) in water (50 mL). After addition, the reaction was kept at the temperature lower than 5 °C for 30 min and it was added a solution of (7.23 g, 43.59 mmol) in water (50 mL). After addition, the reaction was kept at room temperature overnight, poured into water (300 mL) and extracted with CH2Cl2.The organic phase was dried over MgSO4. After workup, the brown oily product was distilled to afford a pale-yellow.

Reference： [1] Tetrahedron Letters, 2012, vol. 53, # 39, p. 5248 - 5252
[2] Angewandte Chemie - International Edition, 2007, vol. 46, # 25, p. 4744 - 4747
[3] Chemistry - A European Journal, 2016, vol. 22, # 6, p. 1941 - 1943
[4] Justus Liebigs Annalen der Chemie, 1873, vol. 168, p. 153[5] Justus Liebigs Annalen der Chemie, 1878, vol. 192, p. 202
[6] Journal of Organic Chemistry, 1979, vol. 44, # 26, p. 4918 - 4924

2
[ 106-49-0 ]
[ 71838-16-9 ]

Reference： [1] Tetrahedron Letters, 2012, vol. 53, # 39, p. 5248 - 5252
[2] Chemistry - A European Journal, 2015, vol. 21, # 46, p. 16463 - 16473

3
[ 591-17-3 ]
[ 71838-16-9 ]

Reference： [1] Journal of the Indian Chemical Society, 1936, vol. 13, p. 187

4
[ 103-89-9 ]
[ 71838-16-9 ]

Reference： [1] Justus Liebigs Annalen der Chemie, 1873, vol. 168, p. 153[2] Justus Liebigs Annalen der Chemie, 1878, vol. 192, p. 202

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[ 71838-16-9 ]

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Yield	Reaction Conditions	Operation in experiment
63%		[(2-Bromo-4-methyl~phenyl)-difluoromethyl]-phosphonic acid diethyl ester (D): To activated zinc (12g, 190 mmol) in DMA (70 mL) was added bromodifluoromethyldiethyl-phosphonate (50g, 190mmol) in DMA (70 mL). The resulting mixture was stirred at 45 C for 3 hours, after which copper (I) bromide (27g, 190 mmol) was added and stirring was continued for 0.5 hours at room temperature. 3-Bromo-4-iodotoluene (28g, 94mmol) was then added and the mixture was sonicated at room temperature for 12 hours. The reaction mixture was partitioned between ether and H2O, filtered through Celite, and the organic layer was dried over MgSO4 and concentrated in vacuo to yield 21g (63%) of a clear, colorless oil.
63%		To activated zinc (1.2g, 19mmol) in DMA (7mL) was added bromodifluoromethyldiethyl-phosphonate (5.0g, 19mmol) in DMA (7mL). The resulting mixture was stirred at 450C for 3 hours, after which copper (I) bromide (2.7g, 19mmol) was added and stirring was continued for 0.5 hours at room temperature. 3-Bromo-4-iodotoluene (2.8g, 9.4mmol) was then added and the mixture was sonicated at room temperature for 12 hours. The reaction mixture was partitioned between ether and H2O, filtered through Celite, and the organic layer was dried over MgSO4 and concentrated in vacuo to yield 2.1g (63%) of a clear, colorless oil. 1HNMR (300 MHz, CDCl3) delta 7.51 (d, J= 6 Hz, 1 H), 7.27 (s, 1 H), 7.20 (d, J- 7.5 Hz, 1 H), 4.27 (m, 4 H), 1.36 (t, J= 8.1 Hz).
		The cadmium reagent was generated as in Example 1 using Cd metal (8.5 g, 0.075 mole), diethyl bromodifluoromethylphosphonate (18 g, 0.068 mole) and AcOH (1.0 niL) in DMF (80 mL). A 40 mL aliquot of this solution was added to CuCl (6.72 g, 0.068 mole) followed after 2 minutes by the addition of <strong>[71838-16-9]3-bromo-4-iodotoluene</strong> (5.0 g, 0.017 mole). The reaction suspension was stirred for 28 hours, then more cadmium reagent solution (30 mL) was added and the reaction stirred an additional 4 days. Ether (700 mL) was added and the solution was filtered through Celite. The Celite cake was washed with additional ether (300 mL) and the combined ether layer was washed with saturated ammonium chloride (500 mL) and water (500 mL) then dried over magnesium sulfate. Filtration and solvent evaporation left behind 8.5 g of crude product. Flash chromatography on silica gel using 30% ethyl acetate/ hexanes afforded 4.4 g of (2-bromo-4-methyl-phenyl)difluoromethylphosphonic acid diethyl ester. To the diethyl ester material obtained, (1.8 g, 0.005 mole) in carbon tetrachloride (CCl4, 30 mL), were added AIBN (0.033 g, 0.0002 mole) and N- bromosuccinimide (NBS, 0.89 g, 0.005 mole). The reaction was heated at reflux for 2 hours (a thin white suspension formed). The reaction was allowed to reach room temperature and the solvent was removed under vacuum. The residue was taken up in ethyl acetate (EtOAc, 120 mL) and washed with saturated NaHCtheta3 (60 mL) and brine (60 mL) then dried over MgSO4. Filtration and solvent evaporation afforded 2.1 g of crude product. Flash chromatography on silica gel using 20-30% ethyl acetate/hexanes afforded 1.11 g of (2- bromo-4-bromomethyl-phenyl)-difluoro-methylphosphonic acid diethyl ester.; Example 25 - Synthesis of Compound 25(2-Bromo-4-methylphenyl) difluoromethylphosphonic acid diethyl ester 25 To a suspension of 8.5 g Cd metal (0.075 mole), in 80 mL DMF (dried over 4A molecular sieves for 24 hours) was added 18 g of diethyl bromodifluoro-methylphosphonate (0.068 mole) and 1 mL glacial acetic acid. Within 4 minutes an exotherm started and lasted EPO <DP n="54"/>? for 20 minutes. The suspension was stirred for 3 hours and allowed to stand at room temperature for 30-40 minutes. A 40 mL aliquot of this solution was added to 6.72 g of CuCl (0.068 mole) followed after 2 minutes by the addition of 5 g of <strong>[71838-16-9]3-bromo-4-iodotoluene</strong> (0.017 mole). The reaction suspension was stirred for 28 hours, then more cadmium reagent solution (30 mL) was added and the reaction stirred an additional 4 days. Ether (700 mL) was added and the solution was filtered through Celite. The Celite cake was washed with 300 mL of ether and the combined ether layer was washed with 500 mL of saturated ammonium chloride and 500 mL of water, then dried over magnesium sulfate. Filtration and solvent evaporation left behind 8.5 g of crude product. Flash chromatography on silica gel using 30% ethyl acetate/hexanes afforded 4.4 g of Compound 25.

Yield	Reaction Conditions	Operation in experiment
82%		[(2-Bromo-4-methyl-phenyl)-difluoro-methyl]-phosphonic acid diethyl ester: A solution of (bromo-difluoro-methyl)-phosphonic acid diethyl ester (25.00 g, 93.6 mmol) in N,N-dimethylacetamide (50 mL) was added drop wise into a suspension of activated zinc (6.12 g, 93.6 mmol) under Argon. The reaction was initiated by heating and kept under 50 C. After the mixture was stirred for 3 h, copper (I) bromide (13.43 g, 93.6 mmol) was added and stirred for 1 h. A solution of 2-bromo-l-iodo-4-methyl-benzene (11.88 g, 40.0 mmol) in N,N-dimethylacetamide (25 mL) was added slowly to the reaction mixture. The resulting suspension was then stirred at room temp for 18 h. Water (100 mL) was added to the reaction mixture and the solution filtered through celite. The filtrate was diluted with EtOAc (250 mL) and organic layer was washed with H20 (50 mL), NaHC03 (5%, 50 mL) and H20 (50 mL). The solvent was removed and the residue was purified by column chromatography on silica gel, eluting with hexanes/EtOAc (4:1) to provide a colorless oil (11.75 g, 82%): .H NMR (300 MHz, CDC13) 8 7.51 (d, 1H), 7.49 (s, 1H), 7.19 (d, 1H), 4.26 (m, 4H), 2.36 (s, 3H), 1.48 (s, 9H), 1.37 (m, 6 H).
63%		To activated Zn (1.2g, 19mmol) in DMA (7mL) was added bromodifluoromethyldiethyl- phosphonate (5.0g, 19mmol) in DMA (7mL). The resulting mixture was stirred at 45C for 3 hours, after which copper(I) bromide (2.7g, 19mmol) was added and stirring was continued for 0.5 hours at room temperature. 3-Bromo-4-iodotoluene (2.8g, 9.4mmol) was then added and the mixture was sonicated at room temperature for 12 hours. The reaction mixture was partitioned between ether and H2O, filtered through Celite, and the organic layer was dried over MgSO4 and concentrated in vacuo to yield 2.1 g (63%) of 27 as a clear, colorless oil;1H NMR (300 MHz, CDCl3) delta 7.51 (d, J = 6 Hz, 1 H), 7.27 (s, 1 H), 7.20 (d, J= 7.5 Hz, 1 H), 4.27 (m, 4 H), 1.36 (t, J = 8.1 Hz)

Physical hazards
Code	Phrase
H200	Unstable explosive
H201	Explosive; mass explosion hazard
H202	Explosive; severe projection hazard
H203	Explosive; fire, blast or projection hazard
H204	Fire or projection hazard
H205	May mass explode in fire
H220	Extremely flammable gas
H221	Flammable gas
H222	Extremely flammable aerosol
H223	Flammable aerosol
H224	Extremely flammable liquid and vapour
H225	Highly flammable liquid and vapour
H226	Flammable liquid and vapour
H227	Combustible liquid
H228	Flammable solid
H229	Pressurized container: may burst if heated
H230	May react explosively even in the absence of air
H231	May react explosively even in the absence of air at elevated pressure and/or temperature
H240	Heating may cause an explosion
H241	Heating may cause a fire or explosion
H242	Heating may cause a fire
H250	Catches fire spontaneously if exposed to air
H251	Self-heating; may catch fire
H252	Self-heating in large quantities; may catch fire
H260	In contact with water releases flammable gases which may ignite spontaneously
H261	In contact with water releases flammable gas
H270	May cause or intensify fire; oxidizer
H271	May cause fire or explosion; strong oxidizer
H272	May intensify fire; oxidizer
H280	Contains gas under pressure; may explode if heated
H281	Contains refrigerated gas; may cause cryogenic burns or injury
H290	May be corrosive to metals
Health hazards
Code	Phrase
H300	Fatal if swallowed
H301	Toxic if swallowed
H302	Harmful if swallowed
H303	May be harmful if swallowed
H304	May be fatal if swallowed and enters airways
H305	May be harmful if swallowed and enters airways
H310	Fatal in contact with skin
H311	Toxic in contact with skin
H312	Harmful in contact with skin
H313	May be harmful in contact with skin
H314	Causes severe skin burns and eye damage
H315	Causes skin irritation
H316	Causes mild skin irritation
H317	May cause an allergic skin reaction
H318	Causes serious eye damage
H319	Causes serious eye irritation
H320	Causes eye irritation
H330	Fatal if inhaled
H331	Toxic if inhaled
H332	Harmful if inhaled
H333	May be harmful if inhaled
H334	May cause allergy or asthma symptoms or breathing difficulties if inhaled
H335	May cause respiratory irritation
H336	May cause drowsiness or dizziness
H340	May cause genetic defects
H341	Suspected of causing genetic defects
H350	May cause cancer
H351	Suspected of causing cancer
H360	May damage fertility or the unborn child
H361	Suspected of damaging fertility or the unborn child
H361d	Suspected of damaging the unborn child
H362	May cause harm to breast-fed children
H370	Causes damage to organs
H371	May cause damage to organs
H372	Causes damage to organs through prolonged or repeated exposure
H373	May cause damage to organs through prolonged or repeated exposure
Environmental hazards
Code	Phrase
H400	Very toxic to aquatic life
H401	Toxic to aquatic life
H402	Harmful to aquatic life
H410	Very toxic to aquatic life with long-lasting effects
H411	Toxic to aquatic life with long-lasting effects
H412	Harmful to aquatic life with long-lasting effects
H413	May cause long-lasting harmful effects to aquatic life
H420	Harms public health and the environment by destroying ozone in the upper atmosphere

[ CAS No. 71838-16-9 ] {[proInfo.proName]}

Quality Control of [ 71838-16-9 ]

Related Doc. of [ 71838-16-9 ]

Product Details of [ 71838-16-9 ]

Calculated chemistry of [ 71838-16-9 ]

Physicochemical Properties

Pharmacokinetics

Lipophilicity

Druglikeness

Water Solubility

Medicinal Chemistry

Safety of [ 71838-16-9 ]

Application In Synthesis of [ 71838-16-9 ]

[ 71838-16-9 ] Synthesis Path-Upstream 1~4

[ 71838-16-9 ] Synthesis Path-Downstream 1~88

Related Functional Groups of [ 71838-16-9 ]

Aryls

Bromides

Precautionary Statements-General

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Response

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[ 71838-16-9 ]