SCHEDULED MAINTENANCE
Controlled O-demethylation of vicinal trimethyoxy-substituted 1,2,3,4-tetrahydroisoquinolies with 20% hydrochloric acid cleaves certain substrates to afford a diphenol, together with the expected monophenol.
A. Brossi and S. Teitel, J. Chem. Soc. D, 1970, 1296 DOI: 10.1039/C29700001296
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