Lithium Hydroxide → 4-Bromo-3-(2-m-tolyl-ethoxy)-benzoic acid

HRID 2405200Notes

Reaction equation

HRID 2405200 reaction equation
C[O:2][C:3](=[O:21])[C:4]1[CH:9]=[CH:8][C:7]([Br:10])=[C:6]([O:11][CH2:12][CH2:13][C:14]2[CH:15]=[C:16]([CH3:20])[CH:17]=[CH:18][CH:19]=2)[CH:5]=1.[OH-].[Li+]>O1CCOCC1>[Br:10][C:7]1[CH:8]=[CH:9][C:4]([C:3]([OH:21])=[O:2])=[CH:5][C:6]=1[O:11][CH2:12][CH2:13][C:14]1[CH:15]=[C:16]([CH3:20])[CH:17]=[CH:18][CH:19]=1

Participants

4

Reactant 2

HCID 3939Lithium HydroxideHCID 670765654-Bromo-3-(2-m-tolyl-ethoxy)-benzoic acid methyl ester

Product 1

HCID 670766394-Bromo-3-(2-m-tolyl-ethoxy)-benzoic acidYield 86.4%

Reagents, catalysts & solvents 1

HCID 312751,4-DioxaneSolvent

Procedure

The compound of step 1 (0.50 g, 1.43 mmol) was dissolved in dioxane (5 ml), lithium hydroxide (7.1 ml of an aqueous 1 M (i.e. 1 mol per liter) solution) was added, and the mixture was reacted overnight. The mixture was partitioned between 2 N hydrochloric acid and EA, the aqueous phase extracted with EA, and the organic extracts were dried over sodium sulfate, filtered and evaporated to dryness in vacuo to give 0.414 g of the title compound.

Workup

  1. customthe mixture was reacted overnight
  2. customThe mixture was partitioned between 2 N hydrochloric acid and EA
  3. extractionthe aqueous phase extracted with EA
  4. dry with materialthe organic extracts were dried over sodium sulfate
  5. filtrationfiltered
  6. customevaporated to dryness in vacuo

Sources & evidence

ORD record
ord-f27e43956dc1486b95929b596815eaed
Source dataset
uspto-grants-2014_08
Patent number
US08802720B2

Reaction notes

Loading…