A general method of synthesis of functionalized Z-vinylic tellurides starting from β-dicarbonyl compounds

Vinylic Tellurides: From Preparation to Their Applicability in Organic Synthesis

“…Additional studies on the reaction revealed that the organic moiety attached to tellurium can be varied; thus, several different organolithium reagents can be used to generate lithium tellurolate, showing that the reaction is general for a variety of organyltellurolates . Furthermore, the nature of the leaving group was examined.…”

“…Additional studies on the reaction revealed that the organic moiety attached to tellurium can be varied; thus, several different organolithium reagents can be used to generate lithium tellurolate, showing that the reaction is general for a variety of organyltellurolates. 34 Furthermore, the nature of the leaving group was examined. Performing the reaction of lithium butyltellurolate with enol phosphate, tosylate, triflate, and acetate afforded the desired product in similar yields and within the same reaction times.…”

1-[(Z)-2-Butyltellanyl-1-chloroethenyl]cyclohex-1-ene

“…For related crystal structures, see: Zeni et al (1999); Barrientos-Astigarraga et al (2002). For ring conformational analysis, see: Cremer & Pople (1975).…”

Formation of trisubstituted buta-1,3-dienes and α,β-unsaturated ketones via the reaction of functionalized vinyl phosphates and vinyl phosphordiamidates with organometallic reagents

“…The vinyl phosphates 1 with a carbonyl group attached to the vinyl unit have been used in the stoichiometric synthesis of organoselenium 11 and organotellurium compounds. 12 A methodology for the stoichiometric Scheme 1 General scheme representing the replacement of the phosphate group of the functionalized vinyl phosphates 1.…”