Regioselective Cycloaddition of Trifluorodiazoethane with Electron-Deficient Allenic Esters and Ketones: Access to CF3‑Substituted Pyrazolines and Pyrazoles
收藏Figshare2016-02-17 更新2026-04-29 收录
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https://figshare.com/articles/dataset/Regioselective_Cycloaddition_of_Trifluorodiazoethane_with_Electron_Deficient_Allenic_Esters_and_Ketones_Access_to_CF_sub_3_sub_Substituted_Pyrazolines_and_Pyrazoles/2285848
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资源简介：
A highly regioselective cycloaddition procedure of electron-deficient allenes with trifluorodiazoethane (CF3CHN2) is described. In absence of bases, the reaction proceeded smoothly to give 5-(trifluoromethyl)pyrazolines, whereas the utility of Et3N led to the formation of 3-(trifluoromethyl)pyrazoles.
创建时间：
2016-02-17
