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Stereo- and regioselectivity of intramolecular 1,2-arene-alkene photocycloaddition in 2-alkenyl-4-chromanones

✍ Scribed by Govind P. Kalena; Padmanava Pradhan; Asoke Banerji

Publisher: Elsevier Science
Year: 1999
Tongue: French
Weight: 720 KB
Volume: 55
Category: Article
ISSN: 0040-4020
DOI: 10.1016/s0040-4020(98)01134-x

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✦ Synopsis

Intramolecular 1,2-arone-alkene photocycloaddition of 2-alkenyl-4-chromanoues gave complex multicyclic oxatctracyclotetradecanediones which on internal photo-and microwave induced thermal rearrangements provided a diverse array of compounds with [3.3.0]bieyclooetane carbon frame work. The stereoand regioehemical aspects as well as desymmetrization of alkenyl chromanones due to intramolecolar 1,2-aronealkene photocycloaddition have also been discussed.

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