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Basic Information
CAS No.: 191171-55-8
Name: 2-Aminophenylboronic acid pinacol ester
Article Data: 60
Molecular Structure:
Molecular Structure of 191171-55-8 (2-Aminophenylboronic acid pinacol ester)
Formula: C12H18BNO2
Molecular Weight: 219.091
Synonyms: 2-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)phenylamine;2-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)aniline;
Density: 1.05 g/cm3
Melting Point: 63-68 °C(lit.)
Boiling Point: 335.6 °C at 760 mmHg
Flash Point: 156.8 °C
Solubility: insoluble in water
Appearance: cream crystalline powder
Hazard Symbols: HarmfulXn, IrritantXi
Risk Codes: 36/37/38-20/21/22
Safety: 26-36
PSA: 44.48000
LogP: 2.14920
Synthetic route
615-36-1

2-bromoaniline

73183-34-3

bis(pinacol)diborane

191171-55-8

2-anilineboronic acid pinacol ester

Conditions
ConditionsYield
With (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride; potassium acetate In N,N-dimethyl-formamide for 12h; Reflux;98%
With [1,1'-bis(diphenylphosphino)ferrocene]dichloropalladium(II); potassium acetate In dimethyl sulfoxide at 85℃; for 12h; Inert atmosphere;87%
With tris(trimethylphosphine)nickel(II) chloride; (2,2,2-trifluoroethoxy)trimethylsilane; cesium fluoride In toluene at 100℃; for 1h; Inert atmosphere;84%
190788-59-1

2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)nitrobenzene

191171-55-8

2-anilineboronic acid pinacol ester

Conditions
ConditionsYield
With 5%-palladium/activated carbon; hydrogen In ethyl acetate at 80℃; for 4h; Temperature; Solvent; Inert atmosphere;95.8%
615-43-0

2-iodophenylamine

25015-63-8

4,4,5,5-tetramethyl-[1,3,2]-dioxaboralane

191171-55-8

2-anilineboronic acid pinacol ester

Conditions
ConditionsYield
With dichlorobis(chlorodi-tert-butylphosphine) palladium(II); triethylamine In toluene for 2h; Inert atmosphere; Reflux;95%
With N(CH2CH3)3; dichloro(1,1'-bis(diphenylphosphanyl)ferrocene)palladium(II)*CH2Cl2 In 1,4-dioxane (Ar); addn. of triethylamine, palladium compd. and borane deriv. to dioxane soln. of aniline deriv., heating at 100°C for 5 h;84%
With triethylamine; (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride In further solvent(s) byproducts: C6H5NH2; (Ar); addn. of 2-IC6H4NH2 to suspn. of PdCl2(dppf) in 1-butyl-3-methylimidazolium tetrafluoroborate; stirring at 100°C; cooling to ambient temp., addn. of Et3N and then pinacolborane (2 equiv.); stirring at 100°C for 0.3 h; extn. with petroleum ether, removal of solvent;60%
615-36-1

2-bromoaniline

25015-63-8

4,4,5,5-tetramethyl-[1,3,2]-dioxaboralane

191171-55-8

2-anilineboronic acid pinacol ester

Conditions
ConditionsYield
With dichloro(1,1'-bis(diphenylphosphanyl)ferrocene)palladium(II)*CH2Cl2; triethylamine In 1,4-dioxane at 100℃; for 12h;87%
With dichloro(1,1'-bis(diphenylphosphanyl)ferrocene)palladium(II)*CH2Cl2; triethylamine In 1,4-dioxane Inert atmosphere;84%
With triethylamine; CyJohnPhos; palladium diacetate In 1,4-dioxane at 80℃; for 1h;81%
95-51-2

2-Chloroaniline

73183-34-3

bis(pinacol)diborane

191171-55-8

2-anilineboronic acid pinacol ester

Conditions
ConditionsYield
With potassium phosphate tribasic heptahydrate; chloro(2-dicyclohexylphosphino-2’,4’,6’-triisopropyl-1,1‘-biphenyl)[2-(2’-amino-1,1‘-biphenyl’)]palladium(II); XPhos In ethanol at 20℃; for 1h;84%
With tris(trimethylphosphine)nickel(II) chloride; (2,2,2-trifluoroethoxy)trimethylsilane; cesium fluoride In tetrahydrofuran at 100℃; for 12h; Inert atmosphere;80%
With (2,2,2-trifluoroethoxy)trimethylsilane; cesium fluoride; dichlorobis(trimethylphosphine)nickel In tetrahydrofuran at 100℃; for 12h; Inert atmosphere; Sealed tube;80%
With C52H67ClFeNPPd; potassium acetate In 1,4-dioxane at 110℃; for 3h; Suzuki-Miyaura coupling; Inert atmosphere;58%
76-09-5

2,3-dimethyl-2,3-butane diol

5570-18-3

2-aminophenylboronic acid

191171-55-8

2-anilineboronic acid pinacol ester

Conditions
ConditionsYield
In tetrahydrofuran76%
In tetrahydrofuran stirred under N2 overnight; evapn., chromy. (SiO2, EtOAc/toluene);76%
615-43-0

2-iodophenylamine

73183-34-3

bis(pinacol)diborane

191171-55-8

2-anilineboronic acid pinacol ester

Conditions
ConditionsYield
With pyridine; C50H44CuN4OP2(1+)*F6P(1-); N-ethyl-N,N-diisopropylamine In water; acetonitrile at 20℃; for 12h; Inert atmosphere; Irradiation;71%
With bis-(dimethylamino)methane In water; acetone; acetonitrile at -5℃; for 0.25h; UV-irradiation; Flow reactor; chemoselective reaction;60%
With caesium carbonate In methanol for 24h; Reflux; Inert atmosphere;37%
With pyridine; cesium fluoride In dimethyl sulfoxide at 105℃; for 2h; Inert atmosphere; Schlenk technique;17%
76-09-5

2,3-dimethyl-2,3-butane diol

121-43-7

Trimethyl borate

2-bis(trimethylsilyl)aminophenyl lithium

191171-55-8

2-anilineboronic acid pinacol ester

Conditions
ConditionsYield
Stage #1: Trimethyl borate; 2-bis(trimethylsilyl)aminophenyl lithium In tetrahydrofuran at -70 - -60℃; Inert atmosphere;
Stage #2: 2,3-dimethyl-2,3-butane diol In tetrahydrofuran; methanol at 20℃;
52%

C24H27BNO2P

191171-55-8

2-anilineboronic acid pinacol ester

Conditions
ConditionsYield
With hydrogenchloride In octane; water at 20℃; for 24h; Inert atmosphere;46%
95-51-2

2-Chloroaniline

25015-63-8

4,4,5,5-tetramethyl-[1,3,2]-dioxaboralane

191171-55-8

2-anilineboronic acid pinacol ester

Conditions
ConditionsYield
With triethylamine; CyJohnPhos; palladium diacetate In 1,4-dioxane at 100℃; for 2h;7%
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  • Casno:

    191171-55-8

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    191171-55-8

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    191171-55-8

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  • 2-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)ANILINE CAS NO.:191171-55-8

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    191171-55-8

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    191171-55-8

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    191171-55-8

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    191171-55-8

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Chemistry

The Molecular formula of 2-Aminophenylboronic acid pinacol ester(191171-55-8): C12H20BNO3
The Molecular Weight of 2-Aminophenylboronic acid pinacol ester(191171-55-8): 237.1
The Molecular Structure of 2-Aminophenylboronic acid pinacol ester(191171-55-8):
Melting point: 63-68 °C(lit.)
Boiling Point: 335.6 °C at 760 mmHg 
Flash Point: 156.8 °C 
Index of Refraction: 1.516 
Molar Refractivity: 63.07 cm
Molar Volume: 208.5 cm
Polarizability: 25 10-24cm
Surface Tension: 35.7 dyne/cm 
Density: 1.05 g/cm3 
Enthalpy of Vaporization: 57.87 kJ/mol 
Vapour Pressure: 0.000118 mmHg at 25°C 
storage temp.: Refrigerator (+4°C)
Water Solubility: Insoluble
BRN: 8548809
IUPAC Name: 2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)aniline
Synonyms: 2-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)ANILINE;2-Aminophenylboronic acid pinacol cyclic ester~2-(2-Aminophenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane;2-(2-Aminophenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane;2-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-;2-AMINOPHENYLBORONIC ACID, PINACOL CYCLIC ESTER;2-AMINOPHENYLBORONIC ACID, PINACOL ESTER;2-AMINOBENZENEBORONIC ACID PINACOL ESTER;2-Aminobenzeneboronic acid pinacol cyclic ester;

Safety Profile

The Hazard Codes of 2-Aminophenylboronic acid pinacol ester(191171-55-8):  Xi,Xn
The Risk Statements information of 2-Aminophenylboronic acid pinacol ester(191171-55-8):
20/21/22:  Harmful by inhalation, in contact with skin and if swallowed 
36/37/38:  Irritating to eyes, respiratory system and skin 
The Safety Statements information of 2-Aminophenylboronic acid pinacol ester(191171-55-8):
26:  In case of contact with eyes, rinse immediately with plenty of water and seek medical advice 
36:  Wear suitable protective clothing 
WGK Germany: 3