The n.m.r. spectra of the four geometrical isomers of β-aminoenones, trans-s-trans, trans-s-cis, cis-s-trans, and cis-s-cis, are discussed. It was found that the chemical shift of the α-proton of β-aminoenones depends on both anisotropic effects and the electron density: δ=δ0–Δδstruc=ΔδAr+K(q–q0). Thus the conformation of non-rigid β-aminoenones can be determined from the observed and the calculated
Synthetic Route to Enaminones via Metal-Free Four-Component Sequential Reactions of Aryl Olefins with CHCl<sub>3</sub>, Et<sub>3</sub>N, and TBHP
作者:Jiantao Zhang、Peng Zhou、Aiguo Yin、Shuhua Zhang、Weibing Liu
DOI:10.1021/acs.joc.1c00823
日期:2021.7.2
An efficient and modular strategy was used to obtain enaminones with a wide range of functional groups via a four-component sequential reaction. This reaction proceeded under mild conditions without a catalyst in one pot. Furthermore, the products could be transformed into thiadiazoles.
Ueno, Satoshi; Shimizu, Ryosuke; Kuwano, Ryoichi, Angewandte Chemie - International Edition, 2009, vol. 48, p. 4543 - 4545
作者:Ueno, Satoshi、Shimizu, Ryosuke、Kuwano, Ryoichi
DOI:——
日期:——
Transformation of α-Substituted Propanols into γ-Amino Alcohols through Nickel-Catalyzed Amination on the Terminal γ-Carbon of Propanols
作者:Satoshi Ueno、Ryoichi Kuwano、Kazumi Usui
DOI:10.1055/s-0030-1260536
日期:2011.6
A nickel-phosphine complex was found to be effective as the catalyst for the transformation of alcohols into β-enaminones, which was successively converted into γ-amino alcohols by a conventional reductant. The sequential transformation is equivalent to the carbon-nitrogen bond formation at the γ-position of saturated alcohols.