Premium
Reactions of B 2 ( o ‐tolyl) 4 with Boranes: Assembly of the Pentaborane(9), HB[B( o ‐tolyl)(μ‐H)] 4
Author(s) -
Bamford Karlee L.,
Qu ZhengWang,
Stephan Douglas W.
Publication year - 2021
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.202101054
Subject(s) - diborane , boranes , borane , chemistry , hydride , medicinal chemistry , stereochemistry , boron , catalysis , hydrogen , organic chemistry
Reactions of the diborane(4) B 2 ( o ‐tolyl) 4 and monohydridoboranes are shown to give B( o ‐tolyl) 3 and (o‐tolyl)BR 2 (R 2 =(C 8 H 14 ) 3 , cat 4 , pin 5 , (C 6 F 5 ) 2 6 ) as the major products. The corresponding reaction with BH 3 ‐sources gives complex mixtures, resulting from hydride/aryl exchange, dimerization and borane elimination. This led to the isolation of the first tetra‐substituted pentaborane(9) HB[B( o ‐tolyl)(μ‐H)] 4 8 . The reaction pathways are probed experimentally and by computations.