acid-catalyzed [3+1+1] cycloaddition reaction between aliphatic isocyanides and azomethineylides generated in situ from aziridines, leading to pyrrolidine derivatives, has been developed. This reaction proceeds smoothly under mild conditions and can also be modified by employing aromatic isocyanides to generate four-membered heterocycles, azetidines, through a [3+1] cycloaddition reaction.
Nickel(ii)-catalyzed diastereoselective [3+2] cycloaddition of N-tosyl-aziridines and aldehydes via selective carbon–carbon bond cleavage
作者:Xingxing Wu、Lei Li、Junliang Zhang
DOI:10.1039/c1cc12189h
日期:——
An efficient and mild Ni(ClO4)2-catalyzed [3+2] cycloaddition of N-tosylaziridines and aldehydesvia CâC bond cleavage was developed. The cycloaddition reaction proceeds with high diastereoselectivity and regioselectivity leading to highly substituted 1,3-oxazolidines. Notably, this novel reaction can be easily expanded to gram level scale and the thermal conditions cannot achieve the same transformation.