The von Braun Reaction Applied to Azetidines

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Abstract
The von Braun reaction (the reaction of cyanogen bromide with tertiary amines) was applied to a series of functionalized N‐alkyl‐substituted azetidines. This reaction mainly led to the cleavage of the strained four‐membered ring to produce 3‐bromo N‐alkyl cyanamides in good yields with variable regioselectivity. The resulting cyanamide products were then employed as original building blocks for the synthesis of nitrogen heterocycles.
Funding Information
  • CNRS
  • University of Versailles St Quentin en Yvelines

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