Stereoselective synthesis of olefins by a reductive coupling reaction.
Ketones and aldehydes are converted to symmetrical and (E)-olefins (1-15) by reaction with 2,4-bis(phenyl)-1,3-diselenadiphosphetane-2,4-diselenide (PhPSe(2))(2), Woollins' reagent, in refluxing toluene; use of diketones was demonstrated by the reaction of PhC(O)CH(2)C(O)Ph which gives 1,2,4,5-tetraphenylbenzene (16) in 83% yield.
Hua
Guoxiong
G
School of Chemistry, University of St Andrews, Fife, KY16 9ST, UK.
Li
Yang
Y
Slawin
Alexandra M Z
AM
Woollins
J Derek
JD