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N-Hetereocyclic carbenes (NHCs) were found to be efficient catalysts for the cyclization of propargylic alcohols and isocyanates. Domino cyclization reactions were carried out using isopropyl-substituted imidazolium salt as a precatalyst, and a wide range of substituted oxazolidinones were obtained in high yields.
Herein we correlate secondary structure perturbation with changes in the solid-state molecular architectures of an elongated hexagonal plate-shaped foldecture derived from the self-assembly of rigid 12-helical β-peptide foldamers to which a flexible C-terminus α-leucine moiety has been appended. This study provides the first complete characterization of the… (More)
The design of stimuli-responsive self-assembled molecular systems capable of undergoing mechanical work is one of the most important challenges in synthetic chemistry and materials science. Here we report that foldectures, that is, self-assembled molecular architectures of β-peptide foldamers, uniformly align with respect to an applied static magnetic… (More)