SITE-SELECTIVITY IN [2-PHOTOCYCLOADDITIONS OF 2H,8H-BENZO[1.2-B(2])3,4-B']DIPYRAN-2,8-DIONE TO ALKENES/

Authors
BETHKE J MARGARETHA P WYNNE AM CALDWELL RA
Citation
J. Bethke et al., SITE-SELECTIVITY IN [2-PHOTOCYCLOADDITIONS OF 2H,8H-BENZO[1.2-B(2])3,4-B']DIPYRAN-2,8-DIONE TO ALKENES/, Journal of chemical research. Synopses, (3), 1998, pp. 142-143
Citations number
5
Categorie Soggetti
Chemistry
Journal title
Journal of chemical research. Synopses → ACNP
ISSN journal
03082342
Issue
3
Year of publication
1998
Pages
142 - 143
Database
ISI
SICI code
0308-2342(1998):3<142:SI[O2>2.0.ZU;2-D
Abstract
On irradiation (lambda=350 nm) in the presence of 2,3-dimethylbut-2-en e or 2-methylpropene the title compound 2 undergoes cycloaddition at t he C(9)-C(10) double bond selectively (>15:1) to afford the 8a,9,10,10 a-tetrahydro-2H,8H-cyclobuta[c]pyrano [2,3-f] [l]benzopyran-2-8-diones 3.