Tetra(pyrrolidino)diborane(4), [(C_4H_8N)_2B]_2, as a new improved alternative synthetic route to bis(pinacolato)diborane(4) - crystal structures of the intermediates

摘要

The compound tetra(pyrrolidino)diborane(4) (3) is an important new and alternative precursor for the preparation and synthesis of bis(pinacolato)diborane(4). THe latter is the major intermediate among the diborane derivatives used for many addition and insertion reactions into multiple bonds. The crystal structure of 3 and its precursor, tris(pyrrolidino)-borane, 1, were determined. In addition the solvolysis reactions and solution behavior of 3 with alcohols were examined.