Reduction of a series of diketo selenides with a low-valenttitanium reagent affords 2,5-dihydroselenophenes and 1,3-dienes in comparable yields.
用低价的钛试剂还原一系列的二酮硒化物,可以得到可比的产率的2,5-二氢硒烯和1,3-二烯。
Quest for diatomic selenium
作者:Andrzej Z. Rys、Erwin K.V. Schultz、David N. Harpp
DOI:10.1080/17415993.2010.513440
日期:2010.10.1
Metallocene pentaselenides and elemental selenium were employed in an effort to generate diatomic selenium (Se2) under thermal conditions. Trapping experiments were carried out with six dienes. A successful formation of a diselenium adduct was observed in the case of 5,6-dimethylene-cyclohexa-1,3-diene (1a). The other dienes produced the corresponding dihydroselenophenes. The in-depth study of the limitations of our method to generate Se2 is described; a plausible mechanism rationalizing the observed results is proposed.
NAKAYAMA JUZO; IKUINA YOJI; MURAI FUMITO; HOSHINO MASAMATSU, J. CHEM. SOC. COMMUN.,(1987) N 14, 1072-1073