Dual Heterogeneous Catalyst Pd–Au@Mn(II)-MOF for One-Pot Tandem Synthesis of Imines from Alcohols and Amines

A new Mn­(II) metal–organic
framework (MOF) 1 was synthesized by the combination
of 4,4,4-trifluoro-1-(4-(pyridin-4-yl)­phenyl)­butane-1,3-dione (L) and Mn­(OAc)2 in solution. 1 features
a threefold-interpenetrating NbO net containing honeycomb-like channels,
in which the opposite Mn­(II)···Mn­(II) distance is 23.5075(10)
Å. Furthermore, 1 can be an ideal platform to support
Pd–Au bimetallic alloy nanoparticles to generate a composite
catalytic system of Pd–Au@Mn­(II)-MOF (2). 2 can be a highly active bifunctional heterogeneous catalyst
for the one-pot tandem synthesis of imines from benzyl alcohols and
anilines and from benzyl alcohols and benzylamines.