THE IMPORTANCE OF PRELIMINARY ORIENTATION IN [4-CYCLOADDITIONS OF DIENES AND DIENOPHILES WITH COMPLEX STRUCTURES(2])

Authors
TOLSTIKOV GA SHULTS EE MALIKOVA TS SPIRIKHIN LV
Citation
Ga. Tolstikov et al., THE IMPORTANCE OF PRELIMINARY ORIENTATION IN [4-CYCLOADDITIONS OF DIENES AND DIENOPHILES WITH COMPLEX STRUCTURES(2]), Mendeleev communications, (2), 1994, pp. 60-62
Citations number
15
Categorie Soggetti
Chemistry
Journal title
Mendeleev communications → ACNP
ISSN journal
09599436
Issue
2
Year of publication
1994
Pages
60 - 62
Database
ISI
SICI code
0959-9436(1994):2<60:TIOPOI>2.0.ZU;2-V
Abstract
The [4+2]-cycloaddition reaction of quinopimaric acid with thebaine or beta-dihydrothebaine has been performed in order to illustrate the im portance of preliminary orientation of the diene and dienophile in the reaction complex stabilized due to different factors: salification wa s shown to be the principal factor in the orientation of the diene and dienophile in aqueous media, and sterile factors were found to domina te in hydrocarbon solvents.