Quick construction of a C–N bond from arylsulfonyl hydrazides and C<sub>sp2</sub>–X compounds promoted by DMAP at room temperature
作者:Kai Yang、Juan-Juan Gao、Shi-He Luo、Han-Qing Wu、Chu-Ming Pang、Bo-Wen Wang、Xiao-Yun Chen、Zhao-Yang Wang
DOI:10.1039/c9ra03403j
日期:——
A mild C–N coupling reaction with arylsulfonyl hydrazides and 2(5H)-furanones shows good yields, excellent reaction regioselectivity and functional group tolerance.
C4-Selective Synthesis of Vinyl Thiocyanates and Selenocyanates Through 3,4-Dihalo-2(5<i>H</i>
)-furanones
作者:Han-Qing Wu、Kai Yang、Shi-He Luo、Xin-Yan Wu、Neng Wang、Si-Hong Chen、Zhao-Yang Wang
DOI:10.1002/ejoc.201900749
日期:2019.7.31
An environmental‐friendly protocol enables the synthesis of vinylthiocyanates and selenocyanates from 3,4‐dihalo‐2(5H)‐furanones, including low‐reactive Csp2‐Cl, substrates in the absence of a metal catalyst and under the promotion of simple inorganic base sodium bicarbonate.
Simple 2(5H)-furanone derivatives with selective cytotoxicity towards non-small cell lung cancer cell line A549 – Synthesis, structure-activity relationship and biological evaluation
A series of 5-alkoxy derivatives of 3,4-dichloro-5-hydroxyfuran-2-(5H)-one (mucochloric acid, MCA) were obtained and subsequently subjected to modification in the C-4 position of 2(5H)-furanone ring. The cytotoxicity of newly synthesized compounds was evaluated in MTT assay against non-small celllung cancer (A549) and healthy lung epithelial cellline (BEAS-2B). The derivatives containing a branched
A 3,4-dihalo-2(5<i>H</i>)-furanone initiated ring-opening reaction of DABCO in the absence of a metal catalyst and additive and its application in a one-pot two-step reaction
作者:Han-Qing Wu、Kai Yang、Xiao-Yun Chen、Mani Arulkumar、Neng Wang、Si-Hong Chen、Zhao-Yang Wang
DOI:10.1039/c9gc01740b
日期:——
In the absence of metal catalysis and an additive, with ethyl acetate as a solvent at 95 °C under air atmosphere for 2 h, an eco-friendly and practical protocol for the synthesis of 4-ethylpiperazine derivatives through a 3,4-dihalo-2(5H)-furanone initiated ring-opening reaction of DABCO is developed. Satisfactory reactivity with moderate to excellent yields and 100% atom economy are observed. This