𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Cyclisation mechanisms of ω-alkenyl-radicals

✍ Scribed by P. Bischof


Publisher
Elsevier Science
Year
1979
Tongue
French
Weight
165 KB
Volume
20
Category
Article
ISSN
0040-4039

No coin nor oath required. For personal study only.

✦ Synopsis


Addition of radicals to unsymetrically substituted double bonds can in principle either

lead to the thermodynamically more stable products ("Markownikow route", M) or the less stable products ("anti-Markownikow route",A).


📜 SIMILAR VOLUMES


Selectivity of Intramolecular Radical Ad
✍ Peter Bischof 📂 Article 📅 1980 🏛 John Wiley and Sons 🌐 German ⚖ 945 KB

## Abstract Small ω‐alkenyl radicals are known to cyclize exclusively __via__ the unexpected __Anti‐Markownikow__ pathway which leads to cycloalkyl‐methyl radicals as the observed reaction products. The strong kinetic preference diminishes, as the linking methylene chain becomes larger. Semiempiric

Microwave assisted free radical cyclisat
✍ Massimiliano Lamberto; David F. Corbett; Jeremy D. Kilburn 📂 Article 📅 2003 🏛 Elsevier Science 🌐 French ⚖ 164 KB

Alkenyl and alkynyl isocyanides were synthesised and then reacted, using microwave flash-heating technology, with thiophenol, 2-mercaptoethanol and ethanethiol, in the presence of a radical initiator, to give highly functionalised pyrrolines and pyroglutamates. Direct comparison with results obtaine

Kinetics and mechanism of some vinyl rad
✍ Athelstan L.J. Beckwith; Dennis M. O'Shea 📂 Article 📅 1986 🏛 Elsevier Science 🌐 French ⚖ 228 KB

The vinyl radicals 2a, 2b, and 11 each undergo fast exe ring closure to give 5a, 5b, and 12, the first two of which readily rearrange to ring-expanded radicals.

Radical cyclisations of methylenecyclopr
✍ Christine Destabel; Jeremy D Kilburn; John Knight 📂 Article 📅 1993 🏛 Elsevier Science 🌐 French ⚖ 232 KB

Radical cycliitions of various methylenecycbpopane derivatives have been stdied and it has been fotmd that methylenecyc~l pfopyl radicals undergo exclusive 5-cx0 cydhtion while methylenecycloppyl butyl mdicala give a mixtme of product9 resulting tium f&x0 and 7-efdo cyclisation. Attempted cyclisatio