Activation of a CNXylyl ancillary ligand in the reaction of electron-deficient alkynes with a phosphido niobocene complex
作者:Antonio Antiñolo、Santiago García-Yuste、Maria Isabel Lopez-Solera、Antonio Otero、Juan C. Pérez-Flores、Rebeca Reguillo-Carmona、Elena Villaseñor
DOI:10.1039/b517307h
日期:——
The niobium phosphido complex [Nb(η5-C5H4SiMe3)2(CNXylyl)(PPh2)] (2) undergoes an unusual cycloaddition reaction with electron-deficient alkynes to give the novel five-membered heteroniobacycles [Nb(η5-C5H4SiMe3)2(κC-C(N(Xylyl))C(CO2Me)C(R)PPh2-κP)] (R = H 3 and R = Me 4).
铌膦配合物[Nb的(η 5 -C 5 H ^ 4森达3)2(CNXylyl)(PPH 2)](2)经历与一个不寻常的环加成反应的缺电子炔烃,得到新五元heteroniobacycles [Nb的(η 5 -C 5 H ^ 4森达3)2(κ Ç -C(N(二甲苯基))C(CO 2 Me)的C(R)PPH 2 -κ P)] (R = H 3和R = Me 4)。