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Home > Encyclopedia > 2-Chlorophenylboronicacid

2-Chlorophenylboronicacid

2-Chlorophenylboronicacid structure

2-Chlorophenylboronicacid 

structure
  • CAS No:

    3900-89-8

  • Formula:

    C6H6BClO2

  • Chemical Name:

    2-Chlorophenylboronicacid

  • Synonyms:

    AKOSBRN-0009;RARECHEMAHPB0177;2-Chlorophenylboroni;2-Chlorophenylboronic;2-chlorobenzeneboronic;Chlorophenylboronicacid;2-CHLORPHENYLBORONSAEURE;2-CHLOROPHENYLBORNICACID;2-CHLOROPHENYLBORONICAICD;O-CHLOROPHENYLBORONICACID

  • Categories:

    Pharmaceutical Intermediates  >  Bulk Drug Intermediates

Description

white crystalline powder

2-Chlorophenylboronicacid Basic Attributes

156.37

156.014938

670-392-1

DTXSID80370213

2931900090

Characteristics

40.5

0.01980

white crystalline powder

1.3±0.1 g/cm3

92-102 °C(lit.)

306.3°C at 760 mmHg

139.0±28.4 °C

1.558

0-6ºC

Safety Information

NONH for all modes of transport

3

R36/37/38

S37/39-S26

Xi:Irritant

P261, P264, P270, P271, P280, P301+P312, P302+P352, P304+P340, P305+P351+P338, P312, P321, P330, P332+P313, P337+P313, P362, P403+P233, P405, P501

H302

2-Chlorophenylboronicacid Use and Manufacturing

Methods of Manufacturing

Procedure (f):n-BuLi (2.5 M in n-Hexane, 2.5 ml, 1.2 eq., 6.3 mmol) was added dropwise to a solution of Bromo chloro benzene (I) (ig, 0.6 ml, 5.2 mmol) and Triisopropylborate (1.44 ml, 1.2 eq., 6.27 mmol) in Toluene and THF (4:1, 10 ml)under nitrogen at -7 0°C over 1 hour. The reaction mixture was stirred for an additional 0.5 hour while the temperature was held at -70°C. The reaction mixture was allowed to warm to -20°C, before a 2 N HC1 solution (5 ml) was added to the reaction mixture. When the reaction mixture reached room temperature, it was extracted with Dichloromethane. Combined organic phase was dried and evaporatedto give a white solid, which was recrystallized from MeCN with a yield of 98percent (800mg).General procedure: Under an argon atmosphere a solution of the appropriate bromobenzene (1 equivalent) dissolved in anhydrous THF (approximately 30 mL per mmol bromobenzene) is cooled to -78 °C using a nitrogen-ethanol-bath. A solution of 2.3 equivalents of n-butyllithium in hexane is added drop wise keeping the temperature below -78 °C. After completion the mixture is stirred for one hour at this temperature. Then 1.5 equivalents of trimethyl borate are added slowly and the reaction mixture is stirred at -78 °C for another hour. The cooling bath is then removed, the reaction mixture is stirred until room temperature is reached and quenched with a saturated solution of ammonium chloride. THF and the major part of the water is removed under reduced pressure, the residue is laced with 3M hydrochloric acid until a pH of 3 is reached. After extraction with DCM (3 x) the organic phases are collected, washed with brine, dried over sodium sulphate and filtered. DCM is removed under reduced pressure, the resulting solid is washed first with ice cold water and then with PE and dried.A.

Uses

suzuki reaction

Computed Properties

Molecular Weight:156.38
Hydrogen Bond Donor Count:2
Hydrogen Bond Acceptor Count:2
Rotatable Bond Count:1
Exact Mass:156.0149373
Monoisotopic Mass:156.0149373
Topological Polar Surface Area:40.5
Heavy Atom Count:10
Complexity:110
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes

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