<i>N-</i>Morpholinomethyl-5-lithiotetrazole: A Reagent for the One-Pot Synthesis of 5-(1-Hydroxyalkyl)tetrazoles
作者:Panagiotis D. Alexakos、Duncan J. Wardrop
DOI:10.1021/acs.joc.9b01885
日期:2019.10.4
An efficient, one-pot method for the preparation of 5-(1-hydroxyalkyl)tetrazoles is reported. N-Morpholinomethyl-5-lithiotetrazole, generated by the deprotonation of 4-(N-tetrazolylmethyl)morpholine with LiHMDS, undergoes addition to ketones and aldehydes (both aromatic and aliphatic) to form 5-(1-hydroxyalkyl)tetrazoles in a high yield, after acidic workup. The reported protocol displays a broad substrate
NMR Study of the Tautomeric Behavior of <i>N</i>-(α-Aminoalkyl)tetrazoles
作者:Alan R. Katritzky、Bahaa El-Dien M. El-Gendy、Bogdan Draghici、C. Dennis Hall、Peter J. Steel
DOI:10.1021/jo101195z
日期:2010.10.1
N-(α-Aminoalkyl)tetrazoles exist in solution as equilibrium mixtures of N1 and N2 tautomers. The position of equilibrium depends significantly on the polarity of the solvent and the substituents in the tetrazole ring. Interconversion between individual tautomers is shown to proceed via tightion-pair intermediates in which intramolecular recombination is faster than the intermolecular crossover since