Efficient Iridium-Thioether-Dithiolate Catalyst for 尾-Alkylation of Alcohols and Selective Imine Formation via N-Alkylation Reactions

详细信息    查看全文

• 作者：Chang Xu ; Lai Yoong Goh ; Sumod A. Pullarkat
• 刊名：Organometallics
• 出版年：2011
• 出版时间：December 12, 2011
• 年：2011
• 卷：30
• 期：23
• 页码：6499-6502
• 全文大小：234K
• 年卷期：v.30,no.23(December 12, 2011)
• ISSN：1520-6041

文摘

An Ir-thioether-dithiolate complex, [Cp*Ir(畏³-tpdt)] (Cp* = 畏⁵-C₅Me₅, tpdt = S(CH₂CH₂S^{鈥?/sup>)₂), is evaluated for its catalytic potential in the 尾-alkylation of secondary alcohols and the N-alkylation of amines with alcohols. The 尾-alkylation reaction proceeded efficiently under low catalyst loading and in the absence of any sacrificial hydrogen additive with only water being formed as the coproduct. The same complex also proved to be efficient in the synthesis of imines via the N-alkylation reaction. The predominant formation of imines, rather than amines, in this reaction is a deviation from the product selectivity usually observed in similar N-alkylation reactions involving organometallic catalysts.}