Half-sandwich ruthenium complexes with acylhydrazone ligands: synthesis and catalytic activity in the N-alkylation of hydrazides

Abstract

A novel half-sandwich ruthenium complex termed [(p-cymene)RuClL] was synthesized by chelating arylhydrazone ligand with [(p-cymene)RuCl2]2 and fully characterized using different spectroscopic and analytic technique. The crystal structure of complex 4...

Ruthenium Complexes with NNN-Pincer Ligands for N-Methylation of Amines Using Methanol

“…The development of practical and eco-compatible conditions for the synthesis of target chemical molecules is highly desirable in both inorganic and organic synthesis . Borrowing hydrogen (BH) is one of the preeminent strategies in synthesizing high-value-added molecules from cheap and abundant alcohols, releasing H 2 O as the sole byproduct. − Although significant progress has been made using primary and secondary aromatic alcohols as alkylating agents, , the activation of aliphatic alcohols, especially methanol, is more challenging due to its higher dehydrogenation energy barrier (Δ H = 84 kJ/mol) . Thus, high temperature and long reaction time are usually required for efficient conversion in C-methylation and N-methylation reactions.…”