Oligomerisation of ethylene to linear α-olefins by tetrahedral cobalt(II) precursors stabilised by benzo[b]thiophen-2-yl-substituted (imino)pyridine ligands

详细信息    查看全文

• 作者：Bianchini ; Claudio ; Giambastiani ; Giuliano ; Mantovani ; Giuseppe ; Meli ; Andrea ; Mimeau ; David
• 关键词：Oligomerisation ; Ethylene ; α ; -Olefins ; Cobalt ; (Imino)pyridine
• 刊名：Journal of Organometallic Chemistry
• 出版年：2004
• 出版时间：April 15, 2004
• 年：2004
• 卷：689
• 期：8
• 页码：1356-1361
• 全文大小：212 K

文摘

On activation by MAO, 2-(imino)pyridine cobalt dichlorides bearing a benzo[b]thiophen-2-yl substituent in the 6-position of the pyridine ring oligomerise ethylene to α-olefins with turn-over-frequencies as high as 1.5×10⁶ mol of C₂H₄ converted (mol of Co×h)⁻¹ and productivities as high as 3769 kg of oligomers (mol of Co×h×bar)⁻¹. Aldimine precursors are more active than ketimine analogues, yet ketimines give higher molecular weight oligomers.