Intramolecular photocycloaddition of 6,6′-polymethylene- bis (4-methyl-2-pyrone)
✍ Scribed by M. Van Meerbeck; S. Toppet; F.C. De Schryver
- Publisher
- Elsevier Science
- Year
- 1972
- Tongue
- French
- Weight
- 150 KB
- Volume
- 13
- Category
- Article
- ISSN
- 0040-4039
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
We herein report the efficient syntheses of biologically active 4-alkenyl-and 4-alkynyl-6-methyl-2-pyrones using Pd-catalysed coupling procedures. A palladium on carbon/triphenylphosphine combination is shown to be the most effective catalyst for Sonogashira cross-coupling of several terminal acetyl
Intramolecular [3+2] -photocyctoadditions of alkenyl methyl 1,4-naphthalenedicarboxylates, which contain rather remote alkene moieties corresponding to isobutene or a-methylstyrene, proceeded largely depending on the chain lengths to give [3+2]-adducts having nine-to eleven-membered ring systems as