Attempted synthesis of a -metalated calix[4]arene.
Jurisch, Christopher D;Arnott, Gareth E;
Beilstein journal of organic chemistry2019Vol. 15pp. 1996-2002
130
jurisch2019attemptedbeilstein
Abstract
An evidence for the formation of a rare -metalated inherently chiral calix[4]arene is described. Our strategy involved using a mesoionic carbene to direct C-H activation, but proved to form an unexpectedly unstable intermediate that was identified through high-resolution mass spectrometry. On route to our target, a new optimized method to mononitrocalix[4]arenes was developed, including optimized and high yielding transformations to azide and 1,2,3-triazole derivatives which may have application in other areas of research.