Hydroselenation of alkynes by lithium butylselenolate: an approach in the synthesis of vinylic selenides.
Vinylic selenides were prepared in good yields by hydroselenation of alkynes with lithium butylselenolate generated by reaction of n-butyllithium with elemental selenium. The regio- and stereochemistry of the hydroselenation depend on the nature of the substituents bonded to the alkyne.
Zeni
Gilson
G
Laboratório de Síntese, Reatividade, Avaliação, Toxicológica e Farmacológica de Organocalcogenios-CCNE-UFSM, 97105-900 Santa Maria RS, Brazil. gzeni@quimica.ufsm.br
Stracke
Marcelo P
MP
Nogueira
Cristina W
CW
Braga
Antonio L
AL
Menezes
Paulo H
PH
Stefani
Helio A
HA