reaction of Wittig reagents with elemental selenium gave the corresponding selenoaldehydes which further reacted with other Wittig reagents to give the corresponding dimeric olefins in good yields. The selenoaldehydesformed afforded corresponding adducts by the reaction with dienes. These selenoaldehydes obtained by retro Diels–Alder reaction were also found to react with Wittig reagents to give the corresponding
A Useful Method for the Synthesis of Selenoaldehydes with Electron-withdrawing Substituents
作者:Masahito Segi、Masakazu Kato、Tadashi Nakajima
DOI:10.1016/0040-4039(91)80125-p
日期:1991.12
Several selenoaldehydes substituted with electron-withdrawing groups were synthesized by the reaction of the corresponding gem-dichlorides with selenium dianion, generated by the treatment of bis(tributyltin) selenide and tetrabutylammonium fluoride trihydrate, and were in situ trapped by 1,3-dienes to give Diels-Alderadducts.