Spirocycle assembly through selective tandem ring closing metathesis reactions
β Scribed by Martin J. Bassindale; Peter Hamley; Andreas Leitner; Joseph P.A. Harrity
- Book ID
- 104261169
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- French
- Weight
- 198 KB
- Volume
- 40
- Category
- Article
- ISSN
- 0040-4039
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β¦ Synopsis
A range of functionalised spirocyclic systems have been prepared under mild and neutral conditions by tandem selective ring closing olefin metathesis reactions. Additionally, a marked preference for 5-membered ring closure over 7-membered ring closure was observed which appears to be a result of a kinetically favoured cyclisation process.
π SIMILAR VOLUMES
## Abstract Several dienynes bearing different substituents have been synthesized and subjected to a ringβclosing metathesis (RCM) reaction using ruthenium carbene complexes. Dienynes containing a preβexisting ring and a quaternary center attached to the alkyne give the expected tandem metathesis p
## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
The first diastereoselective double ring closing metathesis reaction to afford a spirocyclic compound is reported. Cyclisation of amino acid derived tetraenes 7 selectively afforded spirocyclic compounds 8.