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.
One-Pot Synthesis of Highly Substituted Pyrroles by Three-Component Reactions of Donor-Acceptor Cyclopropanes, Salicylaldehydes, and Ammonium Acetate
作者:Zhenjie Su、Wenxing Gu、Siran Qian、Shuwen Xue、Cunde Wang
DOI:10.1002/ejoc.201701674
日期:2018.2.28
rile derivatives have been synthesized efficiently by the one‐pot three‐component reactions of donor–acceptor cyclopropanes, salicylaldehydes, and ammoniumacetate in the presence of triethylamine. With ammoniumacetate as the nitrogen source, a variety of highly substituted pyrroles were obtained in moderate‐to‐excellent yields under mild conditions.
Brönsted acid-mediated annulations of 1-cyanocyclopropane-1-carboxylates with arylhydrazines: efficient strategy for the synthesis of 1,3,5-trisubstituted pyrazoles
作者:Shuwen Xue、Jiaming Liu、Xushun Qing、Cunde Wang
DOI:10.1039/c6ra14557d
日期:——
A diversity-oriented synthesis of 1H-pyrazole derivatives via Brönsted acid-promoted annulations of 1-cyanocyclopropane-1-carboxylates with arylhydrazines has been developed.