In situ mechanochemical synthesis of nitrones followed by 1,3-dipolar cycloaddition: a catalyst-free, “green” route to cis-fused chromano[4,3-c]isoxazoles
作者:Zigmee T. Bhutia、Geethika P.、Anurag Malik、Vikash Kumar、Amrita Chatterjee、Biswajit Gopal Roy、Mainak Banerjee
DOI:10.1039/c5ra21044e
日期:——
An efficient, catalyst free mechanochemical route to cis-fused chromano[4,3-c]isoxazoles has been developed via a simple mortar-pestle grinding method.
Visible Light Promoted Chan‐Lam Reaction and Cycloaddition to Prepare Chromeno[4,3‐c]isoxazolidines in One‐Pot Reaction
作者:Jie Zhao、Bing‐Qing Huang、Bin‐Can Zhu、Xiao‐Pan Ma、Dong‐Liang Mo
DOI:10.1002/adsc.202100448
日期:2021.10.5
A variety of chromeno[4,3-c]isoxazolidines were prepared in good yields through visiblelightpromoted Chan-Lam reaction and [3+2] cycloaddition cascade reaction in onepot. Mechanistic studies showed that visiblelightpromoted both Chan-Lam reaction and cycloaddition. The obtained products were converted to various useful chromenone derivatives. Moreover, the reaction was easily performed at gram