‘On-water’ synthesis of chromeno-isoxazoles mediated by [hydroxy(tosyloxy)iodo]benzene (HTIB)
作者:Mustafa J. Raihan、Veerababurao Kavala、Chun-Wei Kuo、B. Rama Raju、Ching-Fa Yao
DOI:10.1039/b926085d
日期:——
An efficient and handy method for the synthesis of chromeno-isoxazole/isoxazolines under ‘on-water’ conditions is described, together with a thorough mechanistic study.
Synthesis of Functionalized Benzopyrans via Intramolecular 1,3-Dipolar Cycloaddition of Nitrile Oxides
作者:Vipraja V. Vaidya、Karuna S. Wankhede、Manikrao M. Salunkhe、Girish K. Trivedi
DOI:10.1080/00397910802138744
日期:2008.6.27
Abstract Various functionalized benzopyran derivatives have been synthesized in good yields by a sequence of reactions viz. intramolecular cyclization of nitrileoxides, reductive cleavage, and acetylation.