Structure–Catalytic Activity Relationship in Bridging Silacycloalkyl Ring Conformations of Constrained Geometry Titanium Complexes
作者:Eugene Kang、Sung‐Kwan Kim、Tae‐Jin Kim、Jae‐Ho Chung、Jong Sok Hahn、Jaejung Ko、Myung‐Ahn Ok、Minserk Cheong、Sang Ook Kang
DOI:10.1002/ejic.200701312
日期:2008.5
itanium(IV) complexes [TiCl2η5-1-(CySitBuN-κN)-2,3,4,5-R4-C5}] was prepared, where CySi = silacyclobutyl (a), silacyclopentenyl (b), silacyclopentyl (c), and silacyclohexyl (d); R = H (4), Me (5). The starting silane, dichlorosilacycloalkane CySiCl2 (1), was treated with NaCp (LiCp*), followed by LiNHtBu to yield the cyclic silylene-bridged ligands (R4C5)CySi(NHtBu) [R = H (2); Me (3)]. Subsequent