Formal [3+2] cycloaddition of 1-cyanocyclopropane 1-ester with pyridine, quinoline or isoquinoline: a general and efficient strategy for construction of cyanoindolizine skeletons
作者:Juanjuan Liu、Lanxiang Zhou、Weijian Ye、Cunde Wang
DOI:10.1039/c4cc03267e
日期:——
An efficient and straightforward preparation of cyanoindolizine derivatives via a cycloaddition reaction between 1-cyanocyclopropane 1-ester and pyridine or benzopyridine.
Solvent-Free DABCO-Mediated [3 + 2] Cycloadditions of Donor–Acceptor Cyclopropanes with Aldehydes: Strategy for Synthesis of Fully Substituted Furans
作者:Jiaming Liu、Weijian Ye、Xushun Qing、Cunde Wang
DOI:10.1021/acs.joc.6b01259
日期:2016.9.2
DABCO-mediated [3 + 2] cycloadditions of donor–acceptor cyclopropanes with aldehydes under solvent-free conditions have been developed for the preparation of fully substituted furans which are a wide range of structurally interesting and pharmacologically significant compounds. The reaction appears to be general for a variety of 1-cyanocyclopropane-1-carboxylates and aldehydes and tolerates the presence
Iodine-Promoted Domino Reactions of 1-Cyanocyclopropane 1-Esters: A Straightforward Approach to Fully Substituted 2-Aminofurans
作者:Weijian Ye、Chen Tan、Juan Yao、Shuwen Xue、Yang Li、Cunde Wang
DOI:10.1002/adsc.201500078
日期:2016.2.4
ring‐opening/cyclization domino reaction of 1‐cyanocyclopropane 1‐esters for the synthesis of fully substituted 2‐aminofurans is reported. This reaction involves the sequential ring‐opening/intramolecular cyclization reaction of 1‐cyanocyclopropane 1‐esters to give the corresponding 2‐amino‐4,5‐dihydrofurans, which were oxidized with I2 and Et3N in refluxing toluene to give the corresponding 2‐amino‐3‐furancarboxylates