SCHEDULED MAINTENANCE
Mixed er-NHC/phosphine Pd(ii) complexes and their catalytic activity in the Buchwald–Hartwig reaction under solvent-free conditions†
Alexandra A.
Ageshina, 
a
Sergey A.
Rzhevskiy,
ab
Maxim A.
Topchiy,
ab
Gleb A.
Chesnokov,
ab
Pavel S.
Gribanov,
ac
Mikhail S.
Nechaev,
ab
Andrey F.
Asachenko
ab
and
Maxim V.
Bermeshev
*a
a
Sergey A.
Rzhevskiy,
ab
Maxim A.
Topchiy,
ab
Gleb A.
Chesnokov,
ab
Pavel S.
Gribanov,
ac
Mikhail S.
Nechaev,
ab
Andrey F.
Asachenko
ab
and
Maxim V.
Bermeshev
*a
Abstract
A series of novel (NHC)PdCl2-PR3 complexes were synthesized and fully characterized by 1H, 13C, 31P NMR and FT-IR spectroscopy. These complexes showed high catalytic activity toward solvent-free Buchwald–Hartwig amination. Both primary and secondary amines were efficiently utilized under the same reaction conditions. The solvent-free synthesis of valuable N-aryl carbazoles and similar N-heterocyclic systems was described.
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