4-Methylbenzaldehyde → 4-Methoxybenzaldehyde

HRID 1287240Notes

Reaction equation

HRID 1287240 reaction equation
[Na].[CH:2]([C:4]1[CH:5]=[CH:6][C:7](C)=[C:8](S(O)(=O)=O)[CH:9]=1)=[O:3].CC1C=CC([CH:20]=[O:21])=CC=1.OS(O)(=O)=O.O=S(=O)=O>>[CH3:20][O:21][C:7]1[CH:6]=[CH:5][C:4]([CH:2]=[O:3])=[CH:9][CH:8]=1

Participants

5

Reactant 4

HCID 77254-MethylbenzaldehydeHCID 24681Fuming sulfuric acidHCID 5360545SodiumHCID 218044875-Formyl-2-methylbenzene-1-sulfonic acid

Product 1

HCID 312444-Methoxybenzaldehyde

Procedure

The sodium salt of 5-formyl-2-methylbenzenesulphonic acid used as starting material for the bis-stilbene compound of the formula (88) is obtained by sulphonating 4-methylbenzaldehyde with oleum containing 66% of SO3 and purification via the barium salt. In a similar manner the sodium salt of 5-formyl-2methoxybenzenesulphonic acid, used as starting material for the bis-stilbene compound of the formula (89), is obtained from 4-methoxybenzaldehyde. ##SPC61##

Workup

  1. customis obtained
  2. custompurification via the barium salt

Sources & evidence

ORD record
ord-28f22e1593664c0a9332ded2e36e9739
Source dataset
uspto-grants-1976_10
Patent number
US03984399

Reaction notes

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