79445-44-6Relevant articles and documents
Chromium-Catalyzed Reductive Cleavage of Unactivated Aromatic and Benzylic C-O Bonds
Yuan, Shuqing,Ling, Liang,Tang, Jinghua,Luo, Meiming,Zeng, Xiaoming
, p. 3343 - 3350 (2021/07/02)
Reductive cleavage of aromatic and benzylic C-O bonds by chromium catalysis is reported. This deoxygenative reaction was promoted by low-cost CrCl 2precatalyst combined with poly(methyl hydrogen siloxane) as the mild reducing agent, providing a strategy in forming reduced motifs by cleavage of unactivated C-O bonds. A range of functional groups such as bromide, chloride, fluoride, hydroxyl, amino, and alkoxycarbonyl can be retained in the reduction.
Directed Aromatic C-H Activation/Acetoxylation Catalyzed by Pd Nanoparticles Supported on Graphene Oxide
Zhang, Yi,Zhao, Yu,Luo, Yu,Xiao, Liuqing,Huang, Yuxing,Li, Xingrong,Peng, Qitao,Liu, Yizhen,Yang, Bo,Zhu, Caizhen,Zhou, Xuechang,Zhang, Junmin
supporting information, p. 6470 - 6473 (2017/12/26)
The first solid-supported directed aromatic C-H activation/acetoxylation has been successfully developed by using palladium nanoparticles supported on graphene oxide (PdNPs/GO) as a catalyst. The practicability of this method is demonstrated by simple preparation of catalyst, high catalytic efficiency, wide functional group tolerance, and easy scale up of the reaction. A hot filtration test and Hg(0) poisoning test indicate the heterogeneous nature of the catalytic active species.
Metal-free oxidative cyclization of acetophenones with diamines: A facile access to phenylpyridines
Sharma, Rohit,Patel, Neha,Vishwakarma, Ram A.,Bharatam, Prasad V.,Bharate, Sandip B.
supporting information, p. 1009 - 1012 (2016/01/16)
An efficient metal-free access to 2- and 3-phenylpyridines via oxidative coupling of acetophenones or phenylacetones with 1,3-diaminopropane has been described. The reaction involves shorter reaction time, excellent yields and a broad substrate scope. The reaction proceeds via the formation of imine, which further undergoes oxidative C-N bond cleavage, C-C bond formation and oxidation to give a pyridine skeleton. The quantum chemical calculations identified the transition state for the reaction and helped in tracing the reaction mechanism.