Tin-free radical chemistry: intramolecular addition of alkyl radicals to aldehydes and ketones

Autor: Louis Fensterbank, Priscille Devin, Max Malacria
Rok vydání: 1999
Předmět:
Zdroj: Tetrahedron Letters. 40:5511-5514
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(99)01072-2
Popis: The radical cyclization of several ω-iodoaldehydes and a ketone can be accomplished without the use of tributyltin hydride. Triethylborane in presence of oxygen or light from a sun lamp can serve as a radical initiator and terminator. In these conditions, a 5-exo-trig cyclization on an aldehyde is faster than on an alkene.
Databáze: OpenAIRE