本文提出了在温和条件下利用N-卤代琥珀酰亚胺和二苯基膦氧化物合成通用手性和非手性( E )-α-卤代烯酰胺的简便立体选择性结构。该反应无金属、温和、高效、快速且实用,凸显了炔酰胺合成的多功能性。反应底物范围广;手性和非手性炔酰胺均已在很短的时间内转化为相应的 ( E )-α-卤代烯酰胺,而不会影响选择性或复杂性。
Iron-Catalyzed Amidation of Alkynyl Bromides: A Facile Route for the Preparation of Ynamides
摘要:
A facile route to obtain ynamides in high yields was described. The products were achieved through the iron-catalyzed C-N coupling reaction of amides with alkynyl bromides in the presence of 20 mol % of N,N'-dimethylethane-1,2-diamine (DMEDA).
An efficient approach to access functionalized 3-alkenylindoles has been developed through Er(OTf)(3) catalyzed addition of ynamides and indoles. A number of C-aryl substituted ynamides 7a-7k could react with indoles 6a-6s, affording the desired products 8aa-8sa, Bab-8ak, Bbd, 8bk and 8tc in moderate to excellent yields with high regioselectivities. (C) 2020 Published by Elsevier Ltd.
Iron-Catalyzed Amidation of Alkynyl Bromides: A Facile Route for the Preparation of Ynamides
A facile route to obtain ynamides in high yields was described. The products were achieved through the iron-catalyzed C-N coupling reaction of amides with alkynyl bromides in the presence of 20 mol % of N,N'-dimethylethane-1,2-diamine (DMEDA).
Regio- and Stereocontrolled Hydrohalogenation of Ynamides with <i>N</i>-Halosuccinimides (NXS) as the Halogen Source: Synthesis of (<i>E</i>)-α-Haloenamides
作者:Subhransu S. Pati、Archana Mishra、Jaya P. Das
DOI:10.1021/acs.joc.3c02436
日期:2024.2.2
Presented herein is a facile stereoselective construction of synthetically versatile chiral and achiral (E)-α-haloenamides under mild conditions utilizing N-halosuccinimides and diphenylphosphine oxide. This reaction is metal-free, mild, efficient, very rapid, and practical and highlights the synthetic versatility of ynamides. The reaction has a broad substrate scope; both chiral and achiral ynamides
本文提出了在温和条件下利用N-卤代琥珀酰亚胺和二苯基膦氧化物合成通用手性和非手性( E )-α-卤代烯酰胺的简便立体选择性结构。该反应无金属、温和、高效、快速且实用,凸显了炔酰胺合成的多功能性。反应底物范围广;手性和非手性炔酰胺均已在很短的时间内转化为相应的 ( E )-α-卤代烯酰胺,而不会影响选择性或复杂性。