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
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.