Alexakos PD, Wardrop DJ.
N-Morpholinomethyl-5-lithiotetrazole: A Reagent for the One-Pot Synthesis of 5-(1-Hydroxyalkyl)tetrazoles.
J Org Chem 2019;
84:12430-12436. [PMID:
31483677 DOI:
10.1021/acs.joc.9b01885]
[Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
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 scope and functional group tolerance, avoids the use of cyanide- or azide-based reagents, and provides access to sterically congested and unsaturated tetrazoles, which are difficult to access by other means.
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