A novel carbanion-olefin intramolecular cyclization: synthesis of substituted 2-aroyl-3,4-dihydro-2H-benzopyrans from salicylaldehydes
β Scribed by Liang-Yeu Chen; Sie-Rong Li; Po-Yuan Chen; Ian-Lih Tsai; Chia-Ling Hsu; Hsin-Ping Lin; Tzu-Pin Wang; Eng-Chi Wang
- Book ID
- 104096839
- Publisher
- Elsevier Science
- Year
- 2009
- Tongue
- French
- Weight
- 217 KB
- Volume
- 50
- Category
- Article
- ISSN
- 0040-4039
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π SIMILAR VOLUMES
A stereocontrolled synthetic approach to E-and Z-substituted methylene-3,4-dihydro-2H-1-benzopyrans 5 is described from acyclic derivatives using as a key step the palladium-catalyzed intramolecular cyclic carbopalladation of iodoalkynes 4 followed by a carbonylation or a hydride ion capture process
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