Synthesis and Reactions of Azomethines Containing a m-Phenoxyphenyl Group: II. Chemical Transformations >of N-Aryl-m-phenoxyphenylmethanimines and Arylhydrazones of m-Phenoxybenzaldehyde
摘要:
Chemical transformations of N-aryl-m-phenoxyphenylmethanimines and m-phenoxybenzaidehyde arythydrazones were studied by examples of reduction thereof with complex metal hydrides and reactions with dialkyl phosphates and dialkyl phosphites.
A nanoscale iron catalyst for heterogeneous direct <i>N</i>- and <i>C</i>-alkylations of anilines and ketones using alcohols under hydrogen autotransfer conditions
作者:Madhu Nallagangula、Chandragiri Sujatha、Venugopal T. Bhat、Kayambu Namitharan
DOI:10.1039/c9cc04120f
日期:——
report a commercially available nanoscale Fe catalyst for heterogeneous direct N- and C-alkylation reactions of anilines and methyl ketones with alcohols. A hydrogen autotransfer mechanism has been found to operate in these reactions by deuterium labelling studies. In addition, dehydrogenative quinoline synthesis has been demonstrated from amino benzyl alcohols and acetophenones.
A conjugated ketone as a catalyst in alcohol amination reactions under transition-metal and hetero-atom free conditions
作者:Xingchao Dai、Xinjiang Cui、Youquan Deng、Feng Shi
DOI:10.1039/c5ra07681a
日期:——
Here, we show the results of a molecular-defined conjugatedketone catalyzed alcohol amination reaction. Under the optimized reaction conditions, the yields to the desired products reached 98%. The reaction mechanism and kinetic study supposed that carbonyl–hydroxyl groups are the catalytically active sites, and the transfer-hydrogenation reactions progress via the recycling of carbonyl and hydroxyl
efficient and practical transition-metal-free CsOH/O2 catalyst system was developed for the N-alkylation of amines with alcohols under argon. This strategy was compatible with many alcohols and exhibits excellent functional group tolerance. More significantly, the selective formation of secondary amines was achieved in excellent yields. The detailed mechanistic study gave a clear understanding of the role
N‐alkylation reaction of aromatic amines was achieved using aliphatic, aromatic, and heteroaromatic alcohols as the alkylating reagent. A variety of aniline derivatives, including heteroaromatic amines, underwent the N‐alkylation reaction and furnished the corresponding monoalkylated products in good to excellent yields. The application of the reaction is also further demonstrated by the synthesis of a 2‐phenylquinoline
Catalytic Hydroboration and Reductive Amination of Carbonyl Compounds by HBpin using a Zinc Promoter
作者:Ravi Kumar、Parveen Rawal、Indrani Banerjee、Hari Pada Nayek、Puneet Gupta、Tarun K. Panda
DOI:10.1002/asia.202200013
日期:2022.3
Chemoselective hydroboration of aldehydes and ketones with HBpin catalyzed by iminopyridine supported zinc(II) complex under ambient conditions is reported.
报道了在环境条件下由亚氨基吡啶负载的锌 (II) 络合物催化的醛和酮与 HBpin 的化学选择性硼氢化反应。