Activation of a CNXylyl ancillary ligand in the reaction of electron-deficient alkynes with a phosphido niobocene complex.
The niobium phosphido complex [Nb(eta5-C5H4SiMe3)2-(CNXylyl)(PPh2)] (2) undergoes an unusual cycloaddition reaction with electron-deficient alkynes to give the novel five-membered heteroniobacycles [Nb(eta5-C5H4SiMe3)2(kappaC-C(=N(Xylyl))C(CO2Me)=C(R)PPh2-kappaP)] (R = H 3 and R = Me 4).
Antiñolo
Antonio
A
Department of Inorganic Chemistry, University of Castilla-La Mancha, Ciudad Real, Spain. Antonio.Otero@uclm.es
García-Yuste
Santiago
S
Lopez-Solera
Maria Isabel
MI
Otero
Antonio
A
Pérez-Flores
Juan C
JC
Reguillo-Carmona
Rebeca
R
Villaseñor
Elena
E