2-Aminopyrrolyl Dilithium Compounds: Synthesis, Structural Diversity, and Catalytic Activity for Amidation of Aldehydes with Amines

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• 作者：Zhiqiang Guo ; Qiao Liu ; Xuehong Wei ; Yongbin Zhang ; Hongbo Tong ; Jianbin Chao ; Jianping Guo ; Diansheng Liu
• 刊名：Organometallics
• 出版年：2013
• 出版时间：August 26, 2013
• 年：2013
• 卷：32
• 期：16
• 页码：4677-4683
• 全文大小：401K
• 年卷期：v.32,no.16(August 26, 2013)
• ISSN：1520-6041

文摘

Five dilithium compounds containing bidentate dianionic pyrrolyl ligands, [{2-(CH₃NCH₂)C₄H₃N}Li₂(TMEDA)₃] (1), {[渭-畏⁵-2-[CH₃CH₂NCH₂]C₄H₃N]Li₂(TMEDA)}₂ (2), {[渭-畏⁵:畏¹-2-[(CH₃)₃CNCH₂]C₄H₃N]Li₂(TMEDA)}₂ (3), {[畏⁵-2-[(CH₃)₂CHNCH₂]C₄H₃N]Li₂ (TMEDA)}₂ (4), and {[畏⁵-2-[(CH₂)₅CHNCH₂]C₄H₃N]Li₂(TMEDA)}₂ (5), were synthesized, and their structural features were provided. Compounds 1鈥?b>5 were proved to be a series of efficient catalysts for amidation reactions of aldehydes with amines in good to excellent yields under mild conditions.