Title of article
Intramolecular photocycloaddition of olefin-tethered benzo[a]spiro[2,5]octa-1,4-dien-3-one derivatives
Author/Authors
Zhang، نويسنده , , Xuqing and Schultz، نويسنده , , Arthur G.، نويسنده ,
Issue Information
هفته نامه با شماره پیاپی سال 2002
Pages
4
From page
3239
To page
3242
Abstract
Photolysis of benzo[a]spiro[2,5]octa-1,4-dien-3-one derivative 8a afforded spiro-fused tetracycles 10 as a pair of diastereomers in 1.7:1 ratio. The photochemical process occurred by cycloaddition of the intermediate-sulfone stabilized biradical 9 to the tethered olefin. Photolysis of dienone 8b gave only spiro-fused tetracycle 11 without bridged adduct 12.
Keywords
1 , 3-biradical , Photocycloaddition , isomeric interconversion
Journal title
Tetrahedron Letters
Serial Year
2002
Journal title
Tetrahedron Letters
Record number
1651370
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