Base-Promoted/Gold-Catalyzed Intramolecular Highly Selective and Controllable Detosylative Cyclization
作者:Chenghao Zhu、Lin Qiu、Guangyang Xu、Jian Li、Jiangtao Sun
DOI:10.1002/chem.201502073
日期:2015.9.7
controllable and synthetically useful base‐promoted intramolecular detosylative cyclization of bis‐N‐tosylhydrazones has been achieved, affording N‐containing heterocycles and cyclic olefins under transition‐metal‐free or gold‐catalyzed procedures, respectively. Moreover, an effective and practical metal‐free or gold‐catalyzed approach to synthesize polycyclic aromatic compounds is also reported.
New alkene-forming reaction: phenanthrenes from 2-(2-formylphenyl)benzaldehyde bis-tosylhydrazone decomposition
作者:Michael E. Jung、Atsushi Hagiwara
DOI:10.1016/0040-4039(91)80677-x
日期:1991.6
Heating the dilithium or disodium salts of the bistosylhydrazones 5ab of the 2-(2-formylphenyl)benzaldehydes 1ab affords the phenanthrenes 2ab in fair to good yields.