Hydrochloric Acid → 3-Methoxy-4-(5-nitroindol-3-ylmethyl)benzoic acid

HRID 1723240Notes

Reaction equation

HRID 1723240 reaction equation
O.[OH-].[Li+].[CH3:4][O:5][C:6]1[CH:7]=[C:8]([CH:13]=[CH:14][C:15]=1[CH2:16][C:17]1[C:25]2[C:20](=[CH:21][CH:22]=[C:23]([N+:26]([O-:28])=[O:27])[CH:24]=2)[NH:19][CH:18]=1)[C:9]([O:11]C)=[O:10].Cl>O.CO>[N+:26]([C:23]1[CH:24]=[C:25]2[C:20](=[CH:21][CH:22]=1)[NH:19][CH:18]=[C:17]2[CH2:16][C:15]1[CH:14]=[CH:13][C:8]([C:9]([OH:11])=[O:10])=[CH:7][C:6]=1[O:5][CH3:4])([O-:28])=[O:27]

Participants

6

Reactant 3

HCID 313Hydrochloric AcidHCID 168937Lithium hydroxide, monohydrateHCID 114732633-(2-Methoxy-4-methoxycarboxybenzyl)-5-nitroindole

Product 1

HCID 102692073-Methoxy-4-(5-nitroindol-3-ylmethyl)benzoic acid

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 962WaterSolvent

Procedure

A solution of lithium hydroxide monohydrate (1.2 g.) in water (20 ml.) was added to a suspension of nitro ester (C) (2.0 g.) in methanol (30 ml.). The mixture was stirred at ambient temperature for 18 hours and then acidified with hydrochloric acid (1N, 50 ml.). The yellow precipitate was isolated by filtration, washed with water, and dried to give 4-(5-nitroindol-3-ylmethyl)-3-methoxybenzoic acid: partial NMR (250 MHz, DMSO-d6): 3.92(s,3H, OMe); 4.12(s,2H, ArCH2); 11.64(br s,1H, NH).

Workup

  1. customThe yellow precipitate was isolated by filtration
  2. washwashed with water
  3. customdried

Sources & evidence

ORD record
ord-135fa46bf91542248fe97b23ab67ac38
Source dataset
uspto-grants-1989_08
Patent number
US04859692

Reaction notes

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