Tunable and Diastereoselective Brønsted Acid Catalyzed Synthesis of β-Enaminones
作者:Ye-Won Kang、Yu Jin Cho、Seung Jin Han、Hye-Young Jang
DOI:10.1021/acs.orglett.5b03445
日期:2016.1.15
The Brønsted acid catalyzed Meyer–Schuster reaction of hemiaminals was studied for the stereoselective synthesis of β-enaminones. Hemiaminals were formed from propargyl aldehydes (or the oxidation of propargyl alcohols) and amines in the presence of Brønsted acids. A critical step to control the stereochemistry of the products is the protonation of the corresponding allenol intermediate, which is dictated
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.