Next Article in Journal
Processing of Polymer Nanocomposites Reinforced with Polysaccharide Nanocrystals
Previous Article in Journal
An Expeditious Synthesis of [1,2]Isoxazolidin-5-ones and [1,2]Oxazin-6-ones from Functional Allyl Bromide Derivatives
Molecules 2010, 15(6), 4102-4110; doi:10.3390/molecules15064102
Article

Synthesis of a New Series of N,N’-Dimethyltetrahydrosalen (H2 [H2Me]salen) Ligands by the Reductive Ring-Opening of 3,3'-Ethylene-bis(3,4-dihydro-6-substituted-2H-1,3-benzoxazines)

* , , ,  and
Departamento de Química, Universidad Nacional de Colombia, Bogotá, Colombia, A.A. 14490, Colombia
* Author to whom correspondence should be addressed.
Received: 26 April 2010 / Revised: 7 May 2010 / Accepted: 11 May 2010 / Published: 7 June 2010
Download PDF [104 KB, uploaded 18 June 2014]
SciFeed

Abstract

A new series of N,N'-bis(2'-hydroxy-5'-substituted-benzyl)-N,N´-dimethylethane-1,2-diamines (N,N'-dimethyltetrahydrosalen) ligands were prepared in good yield by reduction of the respective 3,3'-ethylene-bis(3,4-dihydro-6-substituted-2H-1,3-benzoxazine) precursors with sodium borohydride . The ligands were characterized by IR, NMR, and elemental analysis, which showed the compounds to be consistent with the proposed structures. Ring-opening reactions of bis-1,3-benzoxazines in the presence of sodium borohydride to produce N,N’-dimethylated tetrahydrosalens (H2 [H2Me]salen) have not been reported in the literature.
Keywords: tetrahydrosalen; salan; bis-benzoxazines; tetradentate ligand tetrahydrosalen; salan; bis-benzoxazines; tetradentate ligand
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Share & Cite This Article

Further Mendeley | CiteULike
Export to BibTeX |
EndNote |
RIS
MDPI and ACS Style

Rivera, A.; Rojas, J.J.; Salazar-Barrios, J.; Maldonado, M.; Ríos-Motta, J. Synthesis of a New Series of N,N’-Dimethyltetrahydrosalen (H2 [H2Me]salen) Ligands by the Reductive Ring-Opening of 3,3'-Ethylene-bis(3,4-dihydro-6-substituted-2H-1,3-benzoxazines). Molecules 2010, 15, 4102-4110.

View more citation formats

Related Articles

Article Metrics

For more information on the journal, click here

Comments

[Return to top]
Molecules EISSN 1420-3049 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert