N-heterocyclic carbene-catalyzed [4 + 2] cycloaddition of ketenes and 3-aroylcoumarins: highly enantioselective synthesis of dihydrocoumarin-fused dihydropyranones
β Scribed by Jian, Teng-Yue ;Chen, Xiang-Yu ;Sun, Li-Hui ;Ye, Song
- Book ID
- 118141004
- Publisher
- Royal Society of Chemistry
- Year
- 2013
- Tongue
- English
- Weight
- 401 KB
- Volume
- 11
- Category
- Article
- ISSN
- 1477-0520
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## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a βFull Textβ option. The original article is trackable v
Chiral N-heterocyclic carbenes were found to be efficient catalysts for the formal [4+2] cycloaddition reaction of alkyl(aryl)ketenes and 9,10-phenanthrenequinone to give the corresponding cycloadducts in good yields with high enantioselectivities.
## Abstract An enantioselective synthesis of highly substituted dihydropyridinβ2βones is realized using an unprecedented NHCβcatalyzed cycloaddition of 1βazadienes and ketenes.