Copper iodide-catalyzed cyclization of (Z)-chalcogenoenynes.
We present here our results of the efficient copper-catalyzed cyclizations of chalcogenoenynes and establish a route to obtain 3-substituted chalcogenophenes in good to excellent yields. In addition, the obtained chalcogenophenes were readily transformed to more complex products using the palladium-catalyzed cross-coupling reactions with boronic acids to give Suzuki-type products in good yields.
Stein
André L
AL
Laboratório de Síntese, Reatividade, Avaliação, Toxicológica e Farmacológica de Organocalcogenios-CCNE-UFSM, 97105-900-Santa Maria, RS, Brazil.
Alves
Diego
D
da Rocha
Juliana T
JT
Nogueira
Cristina W
CW
Zeni
Gilson
G