Synthesis and125Te NMR Spectroscopy of α-Tellurocarbonyl Compounds and Derivatives
摘要:
The reaction of lithium alkyl-, alkenyl-, alkynyl-, and aryl tellurolates with alpha-bromocarbonyl compounds in anhydrous tetrahydrofuran gives the title compounds in yields ranging from 55-92%. The Te-125 NMR chemical shift range for these compounds is 405-1024 ppm.
Several new α-phenyltelluro carbonyl compounds have been synthesized by the reaction of benzenetellurenyl iodide with lithium enolates derived from ketones, esters, and an amide in tetrahydrofuran at -78°C.