The selective formic acid dehydrogenation to a mixture of CO2 and H2 was achieved with moderate to good productivities in the presence of homogeneous Ru catalysts bearing the polydentate tripodal ligands 1,1,1-tris-(diphenylphosphinomethyl)ethane (triphos) and tris-[2-(diphenylphosphino)ethyl]amine (NP3), either made in situ from suitable Ru(III) precursors or as molecular complexes. Preliminary mechanistic studies highlighting subtle differences due to ligand effects in the corresponding systems under study are also presented.
选择性
甲酸脱氢反应在均匀的
钌催化剂的存在下实现,得到
二氧化碳和
氢气的混合物,产率中等到良好。催化剂使用的是具有多齿三足
配体1,1,1-三(双
苯基膦甲基)
乙烷(triphos)和三-[2-(双
苯基膦)乙基]胺(NP3),这些催化剂可以通过适当的
钌(III)前体原位合成或作为分子络合物使用。初步的机制研究展示了
配体效应在相应系统中的微妙差异。