Direct Synthesis of Lactams from Keto Acids, Nitriles, and H2 by Heterogeneous Pt Catalysts

Direct Synthesis of Lactams from Keto Acids, Nitriles, and H2 by Heterogeneous Pt Catalysts
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DOI:
10.1002/cctc.201701355
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发表时间:
2018-02
期刊:
影响因子:
4.5
通讯作者:
S. H. Siddiki;A. S. Touchy;A. Bhosale;Takashi Toyao;Yuji Mahara;Junya Ohyama;A. Satsuma;K. Shimizu
S. H. Siddiki;A. S. Touchy;A. Bhosale;Takashi Toyao;Yuji Mahara;Junya Ohyama;A. Satsuma;K. Shimizu
中科院分区:
化学3区
文献类型:
--
作者:
S. H. Siddiki;A. S. Touchy;A. Bhosale;Takashi Toyao;Yuji Mahara;Junya Ohyama;A. Satsuma;K. Shimizu

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我们在此报道了第一个用于直接合成N-取代的γ-和δ-内酰胺的通用催化体系,其通过酮酸(包括乙酰丙酸)与腈和H2在温和条件(7巴H2,110 °C,无溶剂)下的还原胺化/环化来进行。最有效的催化剂,Pt和MoOx共负载的TiO 2(Pt-MoOx/TiO 2),显示出宽的基底范围、高的转换数(TON)和良好的可重复使用性。
We report herein the first general catalytic system for the direct synthesis of N‐substituted γ‐ and δ‐lactams by reductive amination/cyclization of keto acids (including levulinic acid) with nitriles and H2 under mild conditions (7 bar H2, 110 °C, solvent free). The most effective catalyst, Pt and MoOx co‐loaded TiO2 (Pt‐MoOx/TiO2), shows a wide substrate scope, high turnover number (TON), and good reusability.