An unusual reaction of Lawesson's reagent with 1,8-diketones: A synthesis of fused 1,4-dithiins and thiophenes


Ozturk T.

TETRAHEDRON LETTERS, vol.37, no.16, pp.2821-2824, 1996 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 37 Issue: 16
  • Publication Date: 1996
  • Doi Number: 10.1016/0040-4039(96)00396-6
  • Journal Name: TETRAHEDRON LETTERS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.2821-2824
  • Istanbul Technical University Affiliated: No

Abstract

Reaction of 1,8-diketones 3 with Lawesson's reagent 8 resulted in the formation of five and six-membered rings 5-7, 18, depending on the nature of the substituents. Product 6 is converted in two steps to the unsymmetric 'ET' analogue 20, containing an extra double bond. Copyright (C) 1996 Elsevier Science Ltd