作者:Naga Durgarao Koduri、Halee Scott、Bethany Hileman、Justin D. Cox、Michael Coffin、Lindsay Glicksberg、Syed R. Hussaini
DOI:10.1021/ol202812d
日期:2012.1.20
catalyst has been found to be an effective catalyst for the synthesis of enaminones by coupling thioamides with α-diazodicarbonyl compounds. The reaction is successful in converting primary, secondary, and tertiary thioamides into their corresponding enaminones. The reaction is also suitable for the synthesis of chiral enaminones.
Copper-catalyzed chemoselective cross-coupling reaction of thioamides and α-diazocarbonyl compounds: Synthesis of enaminones
作者:Arpal Pal、Naga D. Koduri、Zhiguo Wang、Erika Lopez Quiroz、Alexandra Chong、Matthew Vuong、Nisha Rajagopal、Michael Nguyen、Kenneth P. Roberts、Syed R. Hussaini
DOI:10.1016/j.tetlet.2017.01.004
日期:2017.2
formation reactions are highly important in pharmaceutical, agrochemical and material research. In this article we describe the first copper-catalyzed cross-couplingreaction of thioamides with acceptor/acceptor-substituted and acceptor-only substituted α-diazocarbonyl compounds to yield enaminones. The reaction shows broad substrate scope in terms of thioamides and diazocarbonyl compounds. Primary
A copper(I)-complexed magnetic nanoparticle catalyst for enaminone synthesis
作者:Leila Mohammadi、Mohammad Ali Zolfigol、Mahsa Ebrahiminia、Kenneth P. Roberts、Samira Ansari、Tahereh Azadbakht、Syed R. Hussaini
DOI:10.1016/j.catcom.2017.08.022
日期:2017.12
The synthesis of a copper(I)-complexed magnetic nanoparticle catalyst is described. The catalyst was characterized using Fourier transform infrared spectroscopy (FT–IR), energy-dispersive X-ray spectroscopy (XPS), atomic absrobtion spectroscopy (AA), thermogravimetric analysis (TGA), vibrating sample magnetometery (VSM), X-ray photoelectron spectroscopy (XPS), scanning electron miscroscopy (SEM) and
Synthetic Studies Towards the Core Structure of Nakadomarin A by a Thioamide-Based Strategy
作者:Jai K. Chavda、Panayiotis A. Procopiou、Peter N. Horton、Simon J. Coles、Michael J. Porter
DOI:10.1002/ejoc.201301063
日期:2014.1
The tricyclic BCD substructure of the marine natural product nakadomarin A has been synthesised. The strategy utilised a key carbon–carbon bond-forming reaction between a furan and an N-acyliminium ion derived from a secondary thiolactam. In addition, a novel three-component coupling reaction between a thioamide, an allylic bromide and an isocyanate, leading to the establishment of two new stereogenic
已合成海洋天然产物 nakadomarin A 的三环 BCD 亚结构。该策略利用了呋喃和衍生自二级硫内酰胺的 N-酰基胺离子之间的关键碳-碳键形成反应。此外,还报道了硫代酰胺、烯丙基溴和异氰酸酯之间的新型三组分偶联反应,导致建立两个新的立体中心。通过使用硫代酰胺的独特化学,已经实现了 nakadomarin A 计划全合成的两个关键步骤。碳环 B 环的形成可以通过呋喃对硫内酰胺衍生的亚胺离子的亲核攻击来实现,并且关键的季铵中心可以通过新型的三组分偶联反应建立。
Concise Enantiospecific Synthesis of a Coccinellied Alkaloid, (−)-Adalinine
作者:Toshio Honda、Mika Kimura
DOI:10.1021/ol006712b
日期:2000.11.1
[reaction: see text] An enantiospecificsynthesis of a coccinellied alkaloid, (-)-adalinine, was established starting from (S)-(-)-pyroglutamic acid, where a stereoselective Michael addition and a samarium iodide-promoted regioselective carbon-nitrogen bond cleavage reaction were involved as the key reactions.