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ChemicalBook CAS DataBase List 2,3,4-Trihydroxybenzaldehyde
2144-08-3

2,3,4-Trihydroxybenzaldehyde synthesis

6synthesis methods
The method for synthesizing 2,3, 4-trihydroxybenzaldehyde is shown as follows.
2,3,4-TrihydroxybenzaldehydeThis method takes pyrogallol as an initial raw material. It comprises three steps of phenolic hydroxyl protection, formylation, and deprotection: protecting two adjacent phenolic hydroxyl groups in the pyrogallol to obtain 4-hydroxybenzo[d][1,3]dioxol-2-one, then performing formylation to obtain 7-hydroxy-2-oxobenzo[d][1,3]dioxole-4-carbaldehyde, and finally removing a protecting group to get a target 2,3,4-trihydroxybenzaldehyde.

-

Yield:-

Steps:

Multi-step reaction with 3 steps
1: triethylamine / tert-butyl methyl ether / Reflux
2: aluminum (III) chloride / tert-butyl methyl ether / 0 - 5 °C
3: water / Reflux

References:

CN112830872,2021,A

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