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초록
Access granted: The platinum-catalyzed cyclization of enynals 1, which contain an additional alkene bond in their side chain, through a [3+2] cycloaddition to give tetracyclic platinum-carbene complexes A was followed by C-H insertion at the δ position to afford highly complex products 2. These polycyclic compounds and related products of the title transformation are extremely difficult to access by other means. (Chemical Equation Presented).
키워드
cyclization; homogeneous catalysis; insertion; platinum; pyrylium ions; CONTAINING CARBONYL YLIDES; PLATINUM(II)-CATALYZED REACTION; O-ALKYNYLBENZALDEHYDES; VINYL ETHERS; CYCLOADDITION; DERIVATIVES; TANDEM; 2-ALKYNYLBENZOATES; BENZANNULATION; GENERATION
- 제목
- Intramolecular Huisgen-type cyclization of platinum-bound pyrylium ions with alkenes and subsequent insertion into a benzylic C-H bond
- 저자
- Oh, Chang Ho; Lee, Ji Ho; Lee, Sit Jin; Kim, Jae Il; Hong, Chang Seop
- 발행일
- 2008-09
- 유형
- Article
- 권
- 47
- 호
- 39
- 페이지
- 7505 ~ 7507