Reactions of Phosphonate Carbanions with Selenium or Sulfur in the Presence of Amines. Synthesis of Seleno- and Thioamides.
作者:Kentaro Okuma、Koumei Ikari、Hiroshi Ohta
DOI:10.1246/cl.1992.131
日期:——
The reaction of phosphonatecarbanions with elemental selenium in the presence of amines afforded the corresponding selenoamides in moderate yields. The reaction of these anions with sulfur also gave thioamides. These reactions might proceed through thio- or selenoaldehyde intermediates
Oxygen–selenium exchange using phenylselenophosphonic dichloride [PhP(Se)Cl<sub>2</sub>]: conversion of CO into CSe
作者:Joseph P. Michael、David H. Reid、Beate G. Rose、Richard A. Speirs
DOI:10.1039/c39880001494
日期:——
Phenylselenophosphonicdichloride brings about preparatively useful oxygen–seleniumexchange reactions in conjugated carbonyl and masked carbonyl compounds, thus enabling tertiary selenoamides, indolizine-3-selenoaldehydes, 1,2-dithiol-3-selones, 1,6aλ4-dithia-6-selenapentalenes, and 6aλ4-thia-6-selena-1,2-diazapentalenes to be prepared.