Amine-catalyzed synthesis of N2-sulfonyl 1,2,3-triazole in water and the tunable N2-H 1,2,3-triazole synthesis in DMSO via metal-free enamine annulation
作者:Yanhui Guo、Yunyun Liu、Jie-Ping Wan
DOI:10.1016/j.cclet.2021.08.003
日期:2022.2
N2-H 1,2,3-triazoles via organocatalytic annulation of enaminone/enaminoester with sulfonylazide has been realized. The unconventional selectivity providing N2-sulfoyl 1,2,3-triazoles takes place in pure water, wherein the hydrogen bond effect between water and the intermediate resulting from enamine-azide corporation accounts for the novel reaction selectivity. On the other hand, the reactions conducted
Cu-Mediated Expeditious Annulation of Alkyl 3-Aminoacrylates with Aryldiazonium Salts: Access to Alkyl <i>N</i><sup>2</sup>-Aryl 1,2,3-Triazole-carboxylates for Druglike Molecular Synthesis
作者:Hao-Nan Liu、Hao-Qiang Cao、Chi Wai Cheung、Jun-An Ma
DOI:10.1021/acs.orglett.0c00006
日期:2020.2.21
Alkyl N-aryl 1,2,3-triazole-carboxylates are important molecules or intermediates in medicinal chemistry, but the synthesis of N2-aryl counterparts remains elusive. Herein, we describe a Cu-mediated annulation reaction of alkyl 3-aminoacrylates with aryldiazonium salts, both of which are readily available substrates. Furthermore, alkyl 2-aminoacrylates are also viable substrates. Diverse alkyl N2-aryl
Aluminium chloride selectively promoted the nucleophilic attack of β-diketone compounds with nitriles to give enaminones.
氯化铝选择性促进了β-二酮化合物与腈的亲核进攻,生成烯酮。
Synthesis of Enaminone‐Pd(II) Complexes and Their Application in Catalysing Aqueous Suzuki‐Miyaura Cross Coupling Reaction
作者:Leiqing Fu、Xiaoji Cao、Jie‐Ping Wan、Yunyun Liu
DOI:10.1002/cjoc.201900417
日期:2020.3
series of Pd(II)‐enaminone complexes, termed Pd(eao)2, have been synthesized and characterized. The investigation on the catalytic activities of these new Pd(II)‐reagents has proved that the Pd(eao)2‐1 possesses excellent catalytic activity for the Suzuki‐ Miyaura cross couplingreactions of aryl bromides/chlorides with aryl/vinyl boronic acids in the environmentally benign media of aqueous PEG400 at