One-pot synthesis of photochromic naphthopyrans in the solid state

Koichi Tanaka, Hiroko Aoki, Hiroyuki Hosomi, Shigeru Ohba

Research output: Contribution to journalArticlepeer-review

64 Citations (Scopus)


matrix presented p-TsOH-catalyzed condensation reactions of 1,1-diaryl-2-propyn-1-ol (1) and 2-naphthol (2) in the solid state gave 3,3-diaryl-3H-naphtho[2,1-b]pyran (6) via Claisen rearrangement. Similar reactions of 1 with 2,6-(7) and 2,7-dihydroxynaphthalenes (8) afforded naphthodipyrane derivatives 9 and 10, respectively. Bis-naphthopyran derivatives 12 were also obtained by the reaction of 1,1,6,6-tetraaryl-2,5-hexadiyn-1,6-diol (11) and 2-naphthol (2) in the solid state.

Original languageEnglish
Pages (from-to)2133-2134
Number of pages2
JournalOrganic Letters
Issue number14
Publication statusPublished - 2000 Jul 13
Externally publishedYes

ASJC Scopus subject areas

  • Biochemistry
  • Physical and Theoretical Chemistry
  • Organic Chemistry


Dive into the research topics of 'One-pot synthesis of photochromic naphthopyrans in the solid state'. Together they form a unique fingerprint.

Cite this