Solvent dependence of singlet oxygen / substrate interactions in ene-reactions, (4+2)- and (2+2)-cycloaddition reactions
β Scribed by Klaus Gollnick; Axel Griesbeck
- Publisher
- Elsevier Science
- Year
- 1984
- Tongue
- French
- Weight
- 244 KB
- Volume
- 25
- Category
- Article
- ISSN
- 0040-4039
No coin nor oath required. For personal study only.
β¦ Synopsis
In ref. 8, B-values were determined by using polymer-bound RB (Sensitox). The insoluble sensitizer did not allow to determine R by extrapolation to zero sensitizer concentration thus leading to too small kr-values (especially in CC14) and, consequently, to a too large dipole moment for the transition state of 5.6 D.
π SIMILAR VOLUMES
The photooxygenation of 2,4-dimethyl-1,3-pentadiene (1) path, leading to the allylic hydroperoxide 3) are explained by competition between a concerted and a perepoxide was investigated in seven polar and nonpolar solvents by oxygen-uptake measurements. The overall deactivation rate mechanism. In all
2,4-Dioxopentane-3-thione 1a reacts as an enophile with ethers or allenes as ene counterparts, the formation of the thiophilic adduct is followed by a fast cycloaddition reaction various allyl derivatives affording thiophilic ene adducts as single regioisomers with high (E) stereoselectivity. Using