Facile preparation of α-amino ketones from oxidative ring-opening of aziridines by pyridine N-oxide
作者:Zhi-Bin Luo、Jing-Yu Wu、Xue-Long Hou、Li-Xin Dai
DOI:10.1039/b711638a
日期:——
The oxidative ring-opening reaction of a variety of activated aziridines by pyridineN-oxide provided alpha-amino ketones or alpha-amino aldehydes in good yields.
N-Sulfonyl-1,2,3-triazoles react with water in the presence of a rhodium catalyst to produce alpha-amino ketones in high yield. An intermediary alpha-imino rhodium(II) carbenoid undergoes insertion into the O-H bond of water. This transformation formally achieves 1,2-aminohydroxylation of terminal alkynes in a regioselective fashion when combined with the copper(I)-catalyzed 1,3-dipolar cycloaddition with N-sulfonyl azides.