28200-11-5Relevant academic research and scientific papers
Synthese et etudes spectroscopiques des tellurolesters
Piette, J.-L.,Debergh, D.,Baiwir, M.,Llabres, G.
, p. 769 - 774 (1980)
A general procedure for Te-alkylated tellurolesters synthesis is reported.The carbonyl i.r. frequencies and 13C chemical shifts of these compounds are compared to the O, S, and Se analogs.The origin of the electronic interaction between the carbonyl group and the heteroatom is shown to depend on this latter nature: whereas a combination of both inductive and mesomeric effects is to be taken into account for O.This effect is mainly inductive for Se and Te.In the case of S-compounds, no such a simple model can be involved.The reason of which might be the participation of the 3d-orbitals to the electronic system.Moreover, the prev iously reported Te heavy atom effet has been detected on the α methylene groups exclusively.
Mild transformation of telluro and seleno esters into carboxylic acid and esters
Dabdoub,Viana
, p. 1619 - 1625 (2007/10/02)
Te-Butyl Telluroesters and Se-Butyl Selenoesters are hydrolyzed to carboxylic acids under very mild conditions by reaction with copper(II) chloride dihydrate. When the reaction is performed in ethanol or methanol, using anhydrous copper(II) chloride a transesterification occurred leading to the oxygenated esters in good yield.
