Silver-catalyzed tandem nucleophilic addition/cycloisomerization of ortho-alkynylbenzaldehydes: Regioselective synthesis of functionalized 1H-isochromene derivatives
作者:Fang-Hui Li、Jian Li、Shun-Yi Wang、Shun-Jun Ji
DOI:10.1016/j.tet.2017.07.051
日期:2017.9
An efficient silver-catalyzed domino cycloisomerization reaction for regioselective assembly of 1H-isochromene derivatives from o-alkynylaryl aldehydes with enaminones as the external nuclephiles is developed. This protocol affords isochromene derivatives in moderate to good yields under simple and mild reaction conditions.
Sulfuration of the C(sp<sup>2</sup>)–H bond of enaminones: a protocol for the synthesis of thioether using elemental sulfur as a sulfurating reagent
作者:Li-Fang Yang、Cheng-Guo Liu、Xiao-Ping Xu、Shun-Jun Ji
DOI:10.1039/c5ob02619a
日期:——
Sulfuration reaction of the C(sp2)–H bond of enaminones with elemental sulfur in the presence of CuBr/K3PO4 was carried out. It provided an efficient method for the synthesis of thioethers in moderate to good yields. The protocol was also applicable to synthesize selenides when selenium powder was used instead of sulfur powder.
在CuBr / K 3 PO 4存在下,进行了烯胺酮的C(sp 2)-H键与元素硫的硫化反应。它提供了以中等至良好收率合成硫醚的有效方法。当使用硒粉代替硫粉时,该方案也适用于合成硒化物。
Nirmal, Jay P.; Patel, Manish P.; Patel, Ranjan G., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 2009, vol. 48, # 5, p. 712 - 717
作者:Nirmal, Jay P.、Patel, Manish P.、Patel, Ranjan G.
DOI:——
日期:——
Iodine(III)-Promoted Ring Contractive Cyanation of Exocyclic β-Enaminones for the Synthesis of Cyanocyclopentanones
作者:Dhananjay Bhattacherjee、Vandna Thakur、Saurabh Sharma、Sandeep Kumar、Richa Bharti、C. Bal Reddy、Pralay Das
DOI:10.1002/adsc.201601208
日期:2017.7.3
A highly efficient hypervalent iodine‐promoted regiocontrolled ring contractive cyanation (RCC) reaction of exocyclic β‐enaminones for the synthesis of cyanocyclopentanone (CCP) was demonstrated at ambient temperature with a wide substrate scope. The methodology offers a facile technique to construct an amino carbonitrile‐containing quaternary stereocenter at the α‐position of cyclopentanone in good
Cu2O-Promoted cascade reaction of O-halobenzoate and enaminones for the synthesis of isoquinolinone derivatives
作者:Yang Liang、Rui Wang
DOI:10.1016/j.tetlet.2022.154287
日期:2023.1
A practical Cu-catalyzed cascade cyclization of o-halobenzoate with enaminones to construct isoquinolinone derivatives is described. The process involves a Cu-catalyzed intermolecular CC coupling and intramolecular azacyclization, wherein a wide range of enaminones could be tolerated.
描述了一种实用的 Cu 催化的邻卤代苯甲酸酯与烯胺酮的级联环化以构建异喹啉酮衍生物。该过程涉及 Cu 催化的分子间 C C 偶联和分子内氮杂环化,其中可以耐受多种烯胺酮。