Radical cyclisation reactions involving phosphonyl radicals: the use of phosphites and phosphine oxides as alternatives to tributyltin hydride
Autor: | Bala Upeandran, Jenny M. Barks, Andrew F. Parsons, Bruce C. Gilbert |
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Rok vydání: | 2001 |
Předmět: | |
Zdroj: | Tetrahedron Letters. 42:3137-3140 |
ISSN: | 0040-4039 |
DOI: | 10.1016/s0040-4039(01)00370-7 |
Popis: | Free radical cyclisation of a variety of 1,6-dienes using CCl 4 in the presence of diethyl phosphite or diphenylphosphine oxide has been investigated. These reactions involve addition of the trichloromethyl radical to the diene followed by a 5- exo - trig cyclisation reaction. The resultant cyclic primary radical can abstract a chlorine atom from CCl 4 or alternatively, abstract a hydrogen atom from the solvent or the organophosphorus compound. |
Databáze: | OpenAIRE |
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