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Home > Encyclopedia > Benzoic acid, 3-chloro-, ethyl ester

Benzoic acid, 3-chloro-, ethyl ester

Benzoic acid, 3-chloro-, ethyl ester structure

Benzoic acid, 3-chloro-, ethyl ester 

structure
  • CAS No:

    1128-76-3

  • Formula:

    C9H9ClO2

  • Chemical Name:

    Benzoic acid, 3-chloro-, ethyl ester

  • Synonyms:

    Benzoic acid,3-chloro-,ethyl ester;Benzoic acid,m-chloro-,ethyl ester;Ethyl m-chlorobenzoate;Ethyl 3-chlorobenzoate;3-Chlorobenzoic acid ethyl ester;NSC 67339

  • Categories:

    Pharmaceutical Intermediates  >  Bulk Drug Intermediates

Benzoic acid, 3-chloro-, ethyl ester Basic Attributes

184.62

184.62

214-441-3

67339

DTXSID10150181

2916399090

Characteristics

26.3

3.1

1.2±0.1 g/cm3

243 °C

115.2±15.3 °C

1.523

0.0329mmHg at 25°C

Safety Information

S24/25

Benzoic acid, 3-chloro-, ethyl ester Use and Manufacturing

Methods of Manufacturing

General procedure: Carboxylic acids (1.00 mmol), primary chloroalkanes(1.20mmol) and IL-1 (0.30mmol) were added respectivelyinto a two necked flask equipped with 6mL 50percentaqueous ethanol solution under stirring, then raised the systemtemperature to 70°C for a needed time in water bath.The progress of the reaction was monitored using thin layer chromatography (TLC). When the reaction was over, thereactor was cooled down to room temperature. The mixturewas diluted with water (10mL) and extracted with ethylacetate (3 × 5mL), the extract was dried over anhydrousNa2SO4, filtered, and concentrated in a rotary evaporatorto collect target product. Meanwhile, the reborn catalystcould be applied in the next cycle was after removing thesolvent and dried at 80°C under vacuum for 6h. All theesterification products were further purified by columnGeneral procedure: n-BuLi (1.67 M solution in hexane, 1.32 mL, 2.2 mmol) was added dropwise into a solution of p-bromochlorobenzene (383 mg, 2.0 mmol) in THF (3 mL) at -78 °C for 30 min. Then, ethyl formate (1.6 mL, 20 mmol) was added to the mixture and the obtained mixture was stirred at -78 °C. After 3 h at the same temperature, IGeneral procedure: Aldehyde 1 (1.0 mmol; 1.0 equiv.) and 4 Å molecular sieves (300 mg) were added to a mixture of DMF (3.0 mL) and an appropriate alcohol (or a thiol) (3.0 mL). To the above solution was added sodium cyanide (1.5 mmol; 1.5 equiv). The reaction mixture was stirred in an open flask at 50 C and monitored by TLC. After the complete consumption of 1, the mixture was poured into water (25 mL) and extracted with diethyl ether (5 × 10 mL). The organic layers were combined, dried over anhydrous magnesium sulfate, and concentrated. The crude mixture was further purified by column chromatography on silica gel using ethyl acetate/hexane as the eluent to furnish the desired ester compound 3. The aqueous layer was acidified with HCl, extracted with ether, and concentrated to yield the corresponding carboxylic acid 6, which was sufficiently pure needing no further purification.General procedure: A mixture of acid (0.2 mmol), alcohol (0.6 mmol) and GO (50 wtpercent, calculated with the mass of acid) in ethyl alcohol or DCE (1 mL) was placed in a test tube equipped with a magnetic stirring bar. The mixture was stirred at 100 °C for 24 h. After the reaction was finished, filtered the GO, solvent was removed, and the residue was separated by column chromatography to give the pure sample.

Benzoic acid, 3-chloro-, ethyl ester: ACTIVE|PMN - indicates a commenced PMN (Pre-Manufacture Notices) substance.

Computed Properties

Molecular Weight:184.62
XLogP3:3.1
Hydrogen Bond Acceptor Count:2
Rotatable Bond Count:3
Exact Mass:184.0291072
Monoisotopic Mass:184.0291072
Topological Polar Surface Area:26.3
Heavy Atom Count:12
Complexity:159
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes

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