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Catalytic Dehydrogenation of Amine‐Boranes using Geminal Phosphino‐Boranes
Author(s) -
Boom Devin H. A.,
de Boed Ewoud J. J.,
Nicolas Emmanuel,
Nieger Martin,
Ehlers Andreas W.,
Jupp Andrew R.,
Slootweg J. Chris
Publication year - 2020
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201900313
Subject(s) - boranes , chemistry , geminal , dehydrogenation , steric effects , medicinal chemistry , catalysis , adduct , amine gas treating , intramolecular force , frustrated lewis pair , borane , stereochemistry , organic chemistry , lewis acids and bases , boron
The reaction of the intramolecular frustrated Lewis pair (FLP) t Bu 2 PCH 2 BPh 2 with the amine‐boranes NH 3 · BH 3 and Me 2 NH · BH 3 leads to the formation of the corresponding FLP‐H 2 adducts as well as novel five‐membered heterocycles that result from capturing the in situ formed amino‐borane by a second equivalent of FLP. The sterically more demanding t Bu 2 PCH 2 BMes 2 does not form such a five‐membered heterocycle when reacted with Me 2 NH · BH 3 and its H 2 adduct liberates dihydrogen at elevated temperatures, promoting the metal‐free catalytic dehydrogenation of amine‐boranes.