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The [(NHC)B(H)C 6 F 5 ] + Cations and Their [B](H)−CO Borane Carbonyls
Author(s) -
Chen Chaohuang,
Li Jun,
Daniliuc Constantin G.,
MückLichtenfeld Christian,
Kehr Gerald,
Erker Gerhard
Publication year - 2020
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.202009353
Subject(s) - borane , carbene , chemistry , hydride , adduct , carbon monoxide , medicinal chemistry , nucleophile , boron , imes , hydrogen , catalysis , organic chemistry
Hydride abstraction from the heterocyclic carbene borane adducts (NHC)BH 2 C 6 F 5 (NHC: IMes or IMe 4 ) gave the B−H containing [(NHC)B(H)C 6 F 5 ] + borenium cations. They added carbon monoxide to give the respective [(NHC)B(H)(C 6 F 5 )CO] + boron carbonyl cations. Carbon nucleophiles add to the boron carbonyl to give [B](H) acyls. Hydride reduced the [B]CO cation to hydroxymethylborane derivatives.