An efficient copper catalyzed one-pot, four-component, and diastereoselective synthesis of highly functionalized ferrocenyl azetidinimines
作者:Siddan Gouthaman、Ponnusamy Shanmugam、Asit Baran Mandal
DOI:10.1016/j.tetlet.2013.04.002
日期:2013.6
An efficient, facile, and diastereoselectivesynthesis of highly functionalized ferrocenyl azetidinimines from copper catalyzed one-pot, four-component reaction of ferrocenealdehyde, aromatic amines, tosyl azide, and aryl alkynes in high yield has been accomplished. A plausible reaction mechanism is provided.
The reduction of imines to amines via transfer hydrogenation was achieved promoted by phosphine‐free manganese(I) catalyst. Using isopropanol as reductant, in the presence of tBuOK (4 mol %) and manganese complex [Mn(CO)3Br(κ2N,N‐PyCH2NH2)] (2 mol %), a large variety of aldimines (30 examples) were typically reduced in 3 hours at 80 °C with good to excellent yield.
The mercuration of a series of aryliminomethylferrocenes occurred predominantly in an ortho-position of the substituted ferrocenyl ring to yield 2-mercurated ferrocenylimines. The regiospecificity of this reaction suggests that the mercury is directed into the ortho-position by coordination of the mercury to imino nitrogen with subsequent electrophilic substitution. The chromatographic and spectral
Manganese catalyzed reductive amination of aldehydes using hydrogen as a reductant
作者:Duo Wei、Antoine Bruneau-Voisine、Dmitry A. Valyaev、Noël Lugan、Jean-Baptiste Sortais
DOI:10.1039/c8cc01787e
日期:——
A one-pot two-step procedure was developed for the alkylation of aminesvia reductive amination of aldehydes using molecular dihydrogen as a reductant in the presence of a manganese pyridinyl-phosphine complex as a pre-catalyst. After the initial condensation step, the reduction of imines formed in situ is performed under mild conditions (50–100 °C) with 2 mol% of catalyst and 5 mol% of tBuOK under
NHC-carbene cyclopentadienyl iron based catalyst for a general and efficient hydrosilylation of imines
作者:Luis C. Misal Castro、Jean-Baptiste Sortais、Christophe Darcel
DOI:10.1039/c1cc14403k
日期:——
A general and efficient hydrosilylation of imines catalysed by a well defined NHC-carbene cyclopentadienyl iron complex has been developed. Both aldimines and ketimines are converted to the corresponding amines under mild conditions, and under visible light activation.