The synthesis of novel polycyclic heterocyclic ring systems via photocyclization. 7. [1]Benzothieno[2,3‐c]naphtho[2,1‐h]quinoline and [1]benzothieno[2,3‐c]naphtho[2,1‐h][1,2,4]triazolo[4,3‐a]quinoline

Kenji Sasaki, Raymond N. Castle

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

The synthesis of two novel polycyclic heterocyclic ring systems via photocyclization is described. These are [1]benzothieno[2,3‐c]naphtho[2,1‐h]quinoline and [1]benzothieno[2,3‐c]naphtho[2,1‐h][1,2,4]triazolo[4,3‐α]‐quinoline. In the 1H nmr spectrum the proton at position 6 is strongly deshielded in the first ring system while the proton at position 6 in the second ring system is shifted considerably upfield while the proton at position 8 in the second ring system is the most deshielded proton in that ring system. The bay regions in both ring systems are severely congested.

Original languageEnglish
Pages (from-to)963-965
Number of pages3
JournalJournal of Heterocyclic Chemistry
Volume29
Issue number4
DOIs
Publication statusPublished - 1992
Externally publishedYes

ASJC Scopus subject areas

  • Organic Chemistry

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