Water → 3,4-Dichlorobenzyl 2-(4-((3,4-dichlorobenzyl)oxy)phenyl)-2-hydroxyacetate

HRID 2369111Notes

Reaction equation

HRID 2369111 reaction equation
O.[OH:2][CH:3]([C:7]1[CH:12]=[CH:11][C:10]([OH:13])=[CH:9][CH:8]=1)[C:4]([OH:6])=[O:5].C([O-])([O-])=O.[K+].[K+].[Cl:20][C:21]1[CH:22]=[C:23]([CH:26]=[CH:27][C:28]=1[Cl:29])[CH2:24]Br.O>CN(C=O)C>[Cl:20][C:21]1[CH:22]=[C:23]([CH:26]=[CH:27][C:28]=1[Cl:29])[CH2:24][O:5][C:4](=[O:6])[CH:3]([C:7]1[CH:12]=[CH:11][C:10]([O:13][CH2:24][C:23]2[CH:26]=[CH:27][C:28]([Cl:29])=[C:21]([Cl:20])[CH:22]=2)=[CH:9][CH:8]=1)[OH:2]

Participants

6

Reactant 4

HCID 962WaterHCID 11430Potassium CarbonateHCID 6397264-(Bromomethyl)-1,2-dichlorobenzeneHCID 126772902-Hydroxy-2-(4-hydroxyphenyl)acetic acid hydrate

Product 1

HCID 669225903,4-Dichlorobenzyl 2-(4-((3,4-dichlorobenzyl)oxy)phenyl)-2-hydroxyacetate

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a solution of hydroxy-(4-hydroxy-phenyl)-acetic acid monohydrate (10 g) in DMF (50 mL) was added K2CO3 (29.7 g,) followed by 3,4-dichlorobenzyl bromide (16.1 mL). The mixture was stirred at room temperature for 3 h. The mixture was poured into water (250 mL) and extracted with EtOAc. The organic layer was washed with water 1N HCl, brine, dried over Na2SO4, and concentrated. The resulting solid was triturated with diethyl ether and filtered to provide [4-(3,4-dichloro-benzyloxy)-phenyl]-hydroxy-acetic acid 3,4-dichloro-benzyl ester as a white solid (9.4 g). 1H NMR (400 MHz, DMSO d6): 7.69 (d, 1H), 7.63 (d, 1H), 7.55 (d, 1H), 7.41 (m, 1H), 7.37 (d, 1H), 7.31 (m, 2H), 7.20 (m, 1H), 6.97 (m, 2H), 6.06 (d, 1H), 5.16 (d, 1H), 5.1 (m, 4H).

Workup

  1. extractionextracted with EtOAc
  2. washThe organic layer was washed with water 1N HCl, brine
  3. dry with materialdried over Na2SO4
  4. concentrationconcentrated
  5. customThe resulting solid was triturated with diethyl ether
  6. filtrationfiltered

Sources & evidence

ORD record
ord-eb5a0050a9cf4a8bb89c4b525049d3ef
Source dataset
uspto-grants-2014_04
Patent number
US08703766B2

Reaction notes

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