Introduction of terminal alkynes into the 2-and 8-positions of the Troger's base core via Sonogashira reaction of 2,8-diiodo-4,10-dimethyl-6H,12H-5,11-methanodibenzo[b,f][1,5]diazocine
Author
Summary, in English
Conditions for the introduction of terminal alkynes into the 2- and 8-positions of the Troger's base core via Sonogashira reaction of 2,8-diiodo-4,10-dimethyl-6H,12H-5,11-methanodibenzo[b,f][1,5]diazocine were established. Only the use of the bulky and electron-rich phosphine P(t-Bu)(3) as a ligand for the palladium catalyst allowed for the Sonogashira reaction to proceed effectively. In addition, excessive equivalents of the alkyne were found to increase the yields of the coupling. The established optimal conditions for the introduction of terminal alkynes into the Troger's base core were applied to differently aryl- and pyridyl-substituted terminal alkynes to afford new analogues of Troger's base 3a-g in moderate to excellent yields.
Department/s
Publishing year
2002
Language
English
Pages
2761-2765
Publication/Series
Synthesis
Issue
18
Document type
Journal article
Publisher
Oxford Polytechnic, Oxford
Topic
- Organic Chemistry
Keywords
- ligands
- alkynes
- Troger's base
- Sonogashira reaction
- supramolecular
- chemistry
Status
Published
ISBN/ISSN/Other
- ISSN: 0039-7881