hydroaminoalkylation of terminal alkenes, 1,3‐dienes, or styrenes allows a direct and highly atom efficient (100 %) synthesis of amines which can result in the formation of two regioisomers, the linear and the branched product. We present a new titanium catalyst with 2,6‐bis(phenylamino)pyridinato ligands for intermolecular hydroaminoalkylation reactions of styrenes and 1‐phenyl‐1,3‐butadienes that delivers the
Flow synthesis of secondary amines over Ag/Al<sub>2</sub>O<sub>3</sub> catalyst by one-pot reductive amination of aldehydes with nitroarenes
作者:Ekaterina A. Artiukha、Alexey L. Nuzhdin、Galina A. Bukhtiyarova、Valerii I. Bukhtiyarov
DOI:10.1039/c7ra08986d
日期:——
An alumina-supported silver catalyst was investigated in the one-pot reductiveamination of aldehydes with nitroarenes in a continuous flow reactor using molecular hydrogen as a reducing agent. A series of secondary amines containing alkyl, OH, OCH3, Cl, Br and CC groups was synthesized in good to excellent yields. The yield of the secondary amine depends on the rate of formation of an intermediate
(aminopyrimidinato)titanium complex has been synthesised from inexpensive and easily accessible 2-(tert-butylamino)pyrimidine and [Ti(NMe2)4] and used as a catalyst for the intermolecular hydroamination of alkynes as well as the cyclization of aminoalkenes. The hydroamination reactions of 1-phenylpropyne and terminal arylalkynes deliver the corresponding anti-Markovnikov addition products with excellent yields and
pH-Mediated Selective Synthesis of N-Allylic Alkylation or N-Alkylation Amines with Allylic Alcohols via an Iridium Catalyst in Water
作者:Nianhua Luo、Yuhong Zhong、Hongling Shui、Renshi Luo
DOI:10.1021/acs.joc.1c01930
日期:2021.11.5
Amination of allylic alcohols is an effective approach in the facile synthesis of N-allylic alkylation or N-alkylationamines. Recently, a series of catalysts were devised to push forward this transformation. However, current synthetic methods are typically limited to achieve either N-allylic alkylation or N-alkylation products via a certain catalyst. In this article, a pH-mediated selective synthesis of N-allylic
Synthesis of secondary amines by reductive amination of aldehydes with nitroarenes over supported copper catalysts in a flow reactor
作者:Alexey L. Nuzhdin、Ekaterina A. Artiukha、Galina A. Bukhtiyarova、Elizaveta A. Derevyannikova、Valerii I. Bukhtiyarov
DOI:10.1016/j.catcom.2017.09.001
日期:2017.12
Supported copper catalysts were investigated for the one-pot reductiveamination of aldehydes with nitroarenes in a continuous flow reactor. This process is considered advantageous compared to current traditional methods, which present several drawbacks, such as toxicity of reducing or alkylation agent, lack of monoalkylation selectivity and large amounts of waste produced. Various secondary amines