合成了带有吡唑基-(NH-P t Bu 2)-吡啶配体的钳型Ru(II)-NNP络合物,并通过NMR,IR,元素分析和X射线单晶晶体学测定对其结构进行了表征,通过仲醇与β-或γ-氨基醇的脱氧反应以及选择性C–N和C–C键的形成,有效地催化了多取代吡咯和吡啶的合成。偶联反应以0.3mol%的催化剂负载量和容许的各种官能团进行。本工作提供了一种从容易获得的配体中构建高活性过渡金属配合物催化剂的替代方法。
The tris(acetylacetonato)rhodium(III) catalyst is shown to be a versatile catalyst in the presence of DABCO (1,4‐diazabicyclo[2.2.2]octane) as ligand for the α‐alkylation of ketones followed by transfer hydrogenation, for the one‐pot β‐alkylation of secondary alcohols with primary alcohols and for the alkylation of aromatic amines in the presence of an inorganic base in toluene.
Catalyst-Free Dehydrative α-Alkylation of Ketones with Alcohols: Green and Selective Autocatalyzed Synthesis of Alcohols and Ketones
作者:Qing Xu、Jianhui Chen、Haiwen Tian、Xueqin Yuan、Shuangyan Li、Chongkuan Zhou、Jianping Liu
DOI:10.1002/anie.201308642
日期:2014.1.3
Direct dehydrative α‐alkylation reactions of ketones with alcohols are now realized under simple, practical, and green conditions without using external catalysts. These catalyst‐free autocatalyzed alkylation methods can efficiently afford useful alkylated ketone or alcohol products in a one‐pot manner and on a large scale by CC bond formation of the in situ generated intermediates with subsequent
Reaction condition controlled nickel(<scp>ii</scp>)-catalyzed C–C cross-coupling of alcohols
作者:Meng-Juan Zhang、Hong-Xi Li、David J. Young、Hai-Yan Li、Jian-Ping Lang
DOI:10.1039/c9ob00418a
日期:——
methodology employing a Ni(II) 4,6-dimethylpyrimidine-2-thiolate cluster catalyst under different reaction conditions. This catalyst could tolerate a wide range of substrates and exhibited a high activity for the annulation reaction of secondary alcohols with 2-aminobenzyl alcohols to yield quinolines. This work is an example of precise chemoselectivity control by careful choice of reaction conditions.
Selective C‐alkylation Between Alcohols Catalyzed by N‐Heterocyclic Carbene Molybdenum
作者:Jiahao Liu、Weikang Li、Yinwu Li、Yan Liu、Zhuofeng Ke
DOI:10.1002/asia.202100959
日期:2021.10.18
The first molybdenum-catalyzed C-alkylation between alcohols via borrowing hydrogen is reported.
报道了第一个钼催化的醇之间通过借氢进行的 C-烷基化反应。
Ruthenium(II) Complexes of 4′‐(Aryl)‐2,2′:6′,2′′‐terpyridyl Ligands as Simple Catalysts for the Transfer Hydrogenation of Ketones
作者:Apurba Maity、Amit Sil、Sanjib K. Patra
DOI:10.1002/ejic.201800585
日期:2018.9.30
characterized by single‐crystal X‐ray diffraction studies. Photophysical and electrochemical studies of the RuIIcomplexes were performed to elucidate the effects of the 4′‐aryl substituents of L1–L3. These RuIIcomplexes show good catalytic activities in the transfer hydrogenation (TH) of ketones with a wide substrates scope in 2‐propanol under reflux. An optimization study revealed that the neutral RuII complexes