Unexpected transformation of 1,1′-methylenebis(2-naphthol) into 1,2,1′,2′-tetrahydrospiro(naphthalene-1,3′-naphtho[2,1-b]pyran )-2-one, a spirodimer of 1,2-naphthoquinone 1-methide, in the presence of boric acid and paraformaldehyde

M. L. Belyanin, V. D. Filimonov, V. A. Raldugin, E. A. Krasnov

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

When heated in benzene with paraformaldehyde and boric acid, 1,1′-methylenebis(2-naphthol) easily decomposes to 1,2-naphthoquinone 1-methide, which dimerizes into a spirodimer. The by-product of the reaction is 14H-dibenzo[a,j]xantriene.

Original languageEnglish
Pages (from-to)914-916
Number of pages3
JournalRussian Chemical Bulletin
Volume50
Issue number5
DOIs
Publication statusPublished - 2001

Keywords

  • 1,1′-methylenebis(2-naphthol)
  • 1,2-naphthoquinone 1-methide
  • 14H-dibenzo[a,j]xanthene
  • Boric acid
  • Paraformaldehyde

ASJC Scopus subject areas

  • Chemistry(all)

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