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Bond activation and catalysis by ruthenium pincer complexes.
TLDR
The heterolytic activation of dihydrogen by NH/H2 MLC was reported by Fryzuk and co-workers in 1987 with pincer Ir and Rh complexes, and complex 73 was found to be an active dehydrogenation catalyst for ammoniaborane and hydrogenation reactions as discussed below.
Gd3+ complexes as potential spin labels for high field pulsed EPR distance measurements.
TLDR
Pulse electron−electron double resonance distance measurements between two high spin Gd3+ ions in a novel bis-Gd 3+ complex involving two pyridine-based gadolinium tetracarboxylate systems linked by a rigid aryl−alkyne unit found the experimental distance was 2.02 ± 0.02 nm.
Direct Synthesis of Amides from Alcohols and Amines with Liberation of H2
TLDR
A reaction in which primary amines are directly acylated by equimolar amounts of alcohols to produce amides and molecular hydrogen in high yields and high turnover numbers is reported.
Efficient hydrogenation of organic carbonates, carbamates and formates indicates alternative routes to methanol based on CO2 and CO
TLDR
Producing methanol — useful as both a fuel and a synthetic building block — from carbon monoxide and carbon dioxide has been achieved using homogeneous catalytic hydrogenation of carbonates, carbamates and formates.
Ruthenium-Catalyzed Urea Synthesis by N-H Activation of Amines.
TLDR
The scope of this new mode of bond activation is extended to the synthesis of urea derivatives from amines using DMF as a carbon monoxide (CO) surrogate, and the reactions are proposed to proceed via N-H activation of amines followed by CO insertion from DMF and with liberation of dihydrogen.
Manganese(I)-Catalyzed α-Alkenylation of Ketones Using Primary Alcohols.
TLDR
A simple protocol of manganese catalyzed selective α-alkenylation of ketones using primary alcohols is reported, which proceeds with the release of water and liberation of molecular hydrogen.
Synthesis of polyamides from diols and diamines with liberation of H2
The amidation reaction based on catalytic coupling of alcohols with amines previously reported by us, using the pincer complexes 1 and 2 as catalysts, was applied to the generation of polyamides from
Applications of Acceptorless Dehydrogenation and Related Transformations in Chemical Synthesis
TLDR
Acceptorless dehydrogenation and related dehydrogenative coupling reactions have the potential for redirecting synthetic strategies to the use of sustainable resources, devoid of toxic reagents and deleterious side reactions, with no waste generation.
Metal-ligand cooperation by aromatization-dearomatization: a new paradigm in bond activation and "green" catalysis.
TLDR
A range of novel catalytic reactions that were developed guided by these new modes of metal-ligand cooperation are described, including a unique water splitting process, which involves consecutive thermal liberation of H(2) and light-induced liberation of O(2), using no sacrificial reagents, promoted by a pyridine-based pincer ruthenium complex.
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