Indium triflate-catalysed Diels–Alder reactions of isochromenylium cations with enones
✍ Scribed by Selvi, Thangavel; Srinivasan, Kannupal
- Book ID
- 119975931
- Publisher
- Royal Society of Chemistry
- Year
- 2013
- Tongue
- English
- Weight
- 350 KB
- Volume
- 11
- Category
- Article
- ISSN
- 1477-0520
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
Attempts have been made on trifluoroacelJc acid catalysed Diels-Alder reaction of furan, 2,5-dimethylfuran and 2,5-diphenylfuran with ,8-ferroccnyl-a-enones. No Diels-Alder products were isolated or detected but products from the FriedeI-Crafls fl-alkylation of furan ring were prepared in some cases
Treatment of acylnitroso-Diels-Alder [2.2.1] bicyclic adducts 2a-b with indium triflate in an alcohol solvent induces ring-opening reactions to afford monocyclic anti-1,2-, anti-1,4-, and syn-1,4-hydroxamic acids with good to excellent regio-and stereoselectivity (up to 7:86:7). Treatment of [2.2.2]
## Abstract The Lewis acidity of various silyl triflates was quantified by utilizing [D~5~]pyridine as a ^2^H NMR spectroscopy probe. The chemical shifts of the ^2^H NMR signals for pyridine–silyl adducts are reported. The rate constants of silyl triflate catalyzed Diels–Alder reactions were determ