An unexpected thermal-ring-rearrangement of benzochromenes to inden-3-yl-naphthols with pTsOH

Org. Biomol. Chem., 2018, Advance Article DOI: 10.1039/C8OB02264J, PaperSrinivasarao Yaragorla, Tabassum Khan Described here is the first report of an unexpected thermal-ring rearrangement (TRR) of benzochromenes to indene derivatives promoted bypTsOH, which proceeds through the protonation of benzochromenes by an acid catalysts followed by ring-opening and ring-closure by an intramolecular Friedel –Crafts cyclization. To cite this article before page numbers are assigned, use the DOI form of citation above. The content of this RSS Feed (c) The Royal Society of Chemistry
Source: RSC - Organic and Biomolecular Chemistry - Category: Molecular Biology Authors: Source Type: research