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Chemical Structure| 72220-51-0 Chemical Structure| 72220-51-0

Structure of 72220-51-0

Chemical Structure| 72220-51-0

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Product Details of [ 72220-51-0 ]

CAS No. :72220-51-0
Formula : C9H6ClF3O3
M.W : 254.59
SMILES Code : O=C(Cl)COC1=CC=C(OC(F)(F)F)C=C1
MDL No. :MFCD02091505

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Application In Synthesis of [ 72220-51-0 ]

* 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 [ 72220-51-0 ]

[ 72220-51-0 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 72220-50-9 ]
  • [ 72220-51-0 ]
YieldReaction ConditionsOperation in experiment
With thionyl chloride;N,N-dimethyl-formamide; for 14h; Example 3; [0214] (4-Trifluoromethoxyphenoxy)-acetyl chloride: (4-Trifluoromethoxyphenoxy)- acetic acid (20.7 g, 88 mmol) was dissolved in thionyl chloride (100 mL). DMF (3 drops) was added to the solution. The solution was stirred for 14 hours. The thionyl chloride was removed in vacuo. The resulting oil was dissolved in dichloromethane, filtered through sodium sulfate and concentrate in vacuo to afford the title compound as a paste-like solid (21.8 g, 97% from the phenol) : MS (EI-GCMS) for C9H6C1F303: 254 (M+).
With oxalyl dichloride; N,N-dimethyl-formamide; In dichloromethane; at 20℃; for 3h; General procedure: To a stirred suspension of various carboxylic acid 4a, 4b, 6a and 8a (1.0 equiv) in CH2Cl2 (25 mL) was added oxalyl chloride (3.0 equiv) and a catalytic amount of DMF. After stirring at room temperature for 3 h, the reaction was concentrated under reduced pressure to afford a yellow oil crude acyl chloride. To a solution of methyl 2-(4-amino-2-fluorophenoxy)acetate 3a (1.0 equiv) in CH2Cl2(25 mL) was added Et3N (1.5 equiv), and this mixture was cooled to -5 C. Subsequently, the crude acyl chloride obtained above was added in dropwise at a rate to ensure that the temperature did not exceed 0 C. The solution was stirred for another 2 hrs at 25 C, then washed successively with 10% HCl (2 × 25 mL), 10% NaHCO3 (2 × 25 mL) and brine (2 × 20 mL). The organic layer was dried over anhydrous sodium sulfate, filtered and the solvent was then evaporated to give the impure amide which was recrystallized from ethanol to give the desired products as colorless crystals. To a solution of the obtained crystals (1.0 equiv)in 2:3:1 THF/MeOH/H2O (18 ml) was added LiOH·H2O (1.5 equiv). After stirring at room temperature for 4 h, the volatiles were removed under reduced pressure. The residue was acidified with 1N hydrochloric acid solution, and then filtered and the filter cake was washed with 5 mL of water, dried in vacuum to afford a white powder. Recrystallization from 75% EtOH gave the desired compounds 8-11 and 13-36 as colorless crystals.
 

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