Environmentally friendly approach to convergent synthesis of highly functionalized indanone fused multicyclic pyrrolines
作者:Xi-Min Liu、Xin-Rong Lin、Sheng-Jiao Yan、Mei-Yang Peng、Rong Huang、Jun Lin
DOI:10.1016/j.tet.2016.07.006
日期:2016.9
A facile synthesis of highly functionized indanone fused multicyclic pyrrolines using the heterocyclic ketene aminal and ninhydrin is described. Derivative alkoxyl or amine substituted analogues were also directly achieved upon adding alcohols or amines as corresponding starting materials. The reaction conditions are environment friendly and have a good tolerance towards a variety of heterocyclic ketene
Catalyst-free cascade reaction of heterocyclic ketene aminals with N-substituted maleimide to synthesise bicyclic pyrrolidinone derivatives
作者:Jin Liu、Hai-Rui Zhang、Xin-Rong Lin、Sheng-Jiao Yan、Jun Lin
DOI:10.1039/c4ra03863k
日期:——
An efficient synthesis of highly substituted bicyclic pyrrolidinone derivatives via a cascadereaction of heterocyclic ketene aminals (HKAs) and N-substituted maleimide in an environmentally friendly medium under catalyst-free conditions is described. This protocol uses group-assisted purification (GAP) chemistry in which purification via chromatography and recrystallization can be avoided, and the
Enantioselective Epoxypyrrolidines via a Tandem Cycloaddition/Autoxidation in Air and Mechanistic Studies
作者:Kaixiu Luo、Yongqiang Zhao、Jiawei Zhang、Jia He、Rong Huang、Shengjiao Yan、Jun Lin、Yi Jin
DOI:10.1021/acs.orglett.8b03605
日期:2019.1.18
A tandem cycloaddition/autoxidation reaction between heterocyclic ketene aminals and diazoester in air is described for the enantioselective preparation of epoxypyrrolidines. Notably, the results of mechanistic studies suggest that epoxide was oxidized from an sp3 C–C single bond, which is of mechanistic and practical interest as this protocol may be suitable for constructing other bioactive heterocyclic
Cascade Reaction of Morita–Baylis–Hillman Acetates with 1,1-Enediamines or Heterocyclic Ketene Aminals: Synthesis of Highly Functionalized 2-Aminopyrroles
作者:Jin Liu、Qi Li、Zheng-Mao Cao、Yi Jin、Jun Lin、Sheng-Jiao Yan
DOI:10.1021/acs.joc.8b02594
日期:2019.2.15
for the construction of two kinds of fully substituted pyrroles, including 2-aminopyrroles and bicyclic pyrroles from Morita–Baylis–Hillman (MBH) acetates with 1,1-enediamines (EDAMs), or heterocyclicketeneaminals (HKAs) via base-promoted tandem Michael addition, elimination, and aromatization sequence has been developed, affording the expected products in moderate to excellent yields. This methodology
A Convenient Synthesis of 3,7′-Bisindole Derivatives
作者:Teng Liu、Hong-You Zhu、Da-Yun Luo、Sheng-Jiao Yan、Jun Lin
DOI:10.3390/molecules21050638
日期:——
An efficient and convenient method to synthesize highly functionalized 3,7'-bisindole derivatives has been developed via a Michael addition and cyclic condensation reaction of heterocyclic ketene aminals (HKAs) with 2-(1H-indol-3-yl)cyclohexa-2,5-diene-1,4-dione derivatives in ethanol-based solvents at room temperature. This strategy provides an efficient, environmentally friendly approach for easy