Indium-Mediated Deoxygenation of Nitrones, N-Oxides and Deoxygenative Reductive Coupling of Nitrones to Vicinal Diamines
摘要:
We reported transformation of nitrones selectively either to aldamines or vicinal diamines and deoxygenation of N-oxides using Indium at ambient temperature in good yields.
Reduction of imines was performed with zinc powder in 5% aq NaOH solutionwithout any organic solvents under mild conditions, and the corresponding amines were obtained in good yields.
In this article, an electrochemical method for the directsynthesis of β-aminoalcohols from imines and ketones is described. Mechanistic studies, including a radical trapping experiment, electron paramagnetic resonance, cyclic voltammetry, and divided-cell electrolysis experiment, support the radical-involved reductive cross coupling of imines with ketones at the cathode. The use of abundant and easily