Akselsen, Oyvind W. et al. published their research in Tetrahedron Letters in 2009 | CAS: 69393-72-2

Benzo[d][1,3]dioxol-4-ol (cas: 69393-72-2) belongs to alcohols. Alcohols are weak acids. The most acidic simple alcohols (methanol and ethanol) are about as acidic as water, and most other alcohols are somewhat less acidic. Grignard and organolithium reagents are powerful tools for organic synthesis, and the most common products of their reactions are alcohols.SDS of cas: 69393-72-2

ortho-Formylation of oxygenated phenols was written by Akselsen, Oyvind W.;Skattebol, Lars;Hansen, Trond Vidar. And the article was included in Tetrahedron Letters in 2009.SDS of cas: 69393-72-2 This article mentions the following:

Oxygenated phenols are mono-formylated using a mixture of (CH2O)n, MgCl2, and Et3N in THF. In all cases but one, only one regioisomer of the salicylaldehyde is obtained in good to high yield. In the experiment, the researchers used many compounds, for example, Benzo[d][1,3]dioxol-4-ol (cas: 69393-72-2SDS of cas: 69393-72-2).

Benzo[d][1,3]dioxol-4-ol (cas: 69393-72-2) belongs to alcohols. Alcohols are weak acids. The most acidic simple alcohols (methanol and ethanol) are about as acidic as water, and most other alcohols are somewhat less acidic. Grignard and organolithium reagents are powerful tools for organic synthesis, and the most common products of their reactions are alcohols.SDS of cas: 69393-72-2

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts