Synthesis of the first amine–dicarboxyboranes and their derivatives

Abstract

The first amine–dicarboxyboranes and their dimethyl esters are synthesized from amine–dicyanoboranes via [amine–bis(ethylnitrilium)hydroboron(2+)] tetrafluoroborates, [amine–bis(C-hydroxy-N-ethyliminium)hydroboron(2 )] cations and amine–bis(N-ethylcarbamoyl)boranes; C-methoxy-N-ethyliminium groups adjacent to boron undergo unusual hydrolysis.