The transformation of the CC bond of olefin to nitriles has been developed, using easily available NaNO2 as both the nitrogensource and oxidant. Several aryl, heterocyclic nitriles with various substituting groups could be successfully prepared in good to high yields. Based upon experimental observations, a possible reaction mechanism is proposed.
regioselective nitration of the styrene double bond by an ET process. The resulting β-nitrobenzyl radical 6 can, depending on the reaction conditions, undergo reversible coupling with nitric oxide to afford the nitroso derivative 7 and then the tautomeric oxime 1, or trapping by dioxygen, eventually leading to products 2, 3, and 4 through the intermediacy of the peroxynitrite derivative 8. Oxime 1 and nitrate
COMPOUNDS AND COMPOSITIONS AS INHIBITORS OF CANNABINOID RECEPTOR 1 ACTIVITY
申请人:Liu Hong
公开号:US20120225869A1
公开(公告)日:2012-09-06
The invention provides compounds, pharmaceutical compositions comprising such compounds and methods of using such compounds to treat or prevent diseases or disorders associated with the activity of Cannabinoid Receptor 1 (CB1).
Development of regioselective [2 + 3] cycloaddition reactions of nitrile oxides with alkenes using intramolecular reactions through oxime groups [1]
作者:Nao Umemoto、Ayumi Imayoshi、Kazunori Tsubaki
DOI:10.1016/j.tet.2022.132833
日期:2022.8
oxime group and demonstrated their intramolecular [2 + 3] cycloaddition reactions. The desired cycloadducts were obtained in high yields and as single regioisomers. Furthermore, face-selective cycloaddition reactions were achieved by introducing a stereocenter into the linker moiety, affording the desired cycloadducts with good diastereoselectivity.