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Reactivity of a Tetra( o ‐tolyl)diborane(4) Dianion as a Diarylboryl Anion Equivalent
Author(s) -
Akiyama Seiji,
Yamada Kaito,
Yamashita Makoto
Publication year - 2019
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201907400
Subject(s) - diborane , chemistry , tetra , lithium (medication) , ion , dissociation (chemistry) , salt (chemistry) , bond dissociation energy , medicinal chemistry , reactivity (psychology) , ionic bonding , homo/lumo , inorganic chemistry , boron , molecule , organic chemistry , medicine , alternative medicine , pathology , endocrinology
Lithium and magnesium salts of tetra( o ‐tolyl)diborane(4) dianion, having B=B double bond character, were synthesized. It was clarified that the lithium salt of the dianion has a high‐lying HOMO and a narrow HOMO–LUMO gap, which were perturbed by dissociation of Li + cation, as judged by UV/Vis spectroscopy and DFT calculations. The lithium salt of the dianion reacted as two equivalents of a diarylboryl anion with CH 2 Cl 2 or S 8 to give boryl‐substituted products.