Aromatic fluoro-de-triazenation with boron trifluoride diethyl etherate under non-protic acid conditions

Fluoro-de-triazenation of 3,3-diethyl-1-aryltriazenes can be achieved by conventional or under microwave heating in carbon tetrachloride, in the presence of boron trifluoride diethyl etherate without any protic acid to avoid corresponding unwanted byproduct formation.

In order to improve fluoro-de-triazenation methodology, the fluorination reaction on 3,3-diethyl-1-(4-substituted aryl)triazenes using boron trifluoride under conventional and microwave heating in different organic solvents and in the absence of protic acid (no unwanted Ar-A byproduct formation) were studied.Figure optionsDownload as PowerPoint slideHighlights
► Fluorination of 3,3-diethyl-1-(4-substituted aryl)triazenes.
► Fluoro-de-triazenation methodology using boron trifluoride under conventional and microwave heating in different organic solvents.
► Absence of protic acid, thus avoiding the competitive formation of the unwanted compound Ar-A.