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Volume 3, Issue 2 (Suppl)
Trends in Green chem
ISSN: 2471-9889
Environmental & Green Chemistry 2017
July 24-26, 2017
Page 91
5
th
International Conference on
6
th
International Conference on
July 24-26, 2017 Rome, Italy
Environmental Chemistry and Engineering
Green Chemistry and Technology
&
Green synthetic approaches for medium ring-sized and linear benzylimidazolidine oligomers
Augusto Rivera
1
, Jaime Ríos-Motta
1
, Rodolfo Quevedo
1
and
Luz Stella Neri
2
1
Universidad Nacional de Colombia, Sede Bogotá, Colombia
2
Universidad de la Amazonía, Colombia
A
minophenol-typeMannich bases are of great chemical and industrial interest due to their growing applicability for the production
of new polymeric materials with excellent mechanical, thermal, photophysical, and catalytic properties. The reaction between
the phenolic Mannich bases 1,3-bis[2’-hydroxybenzyl]imidazolidines and the macrocyclic aminal 1,3,6,8-tetraazatricyclo[4.4.1.13,8]
dodecane (TATD) - a preformed Mannich base - was studied under solvent-free conditions. The solvent-free Mannich-type aromatic
reaction between the macrocyclic aminal TATD and Mannich phenolic bases of the type 1,3-bis[2’-hydroxybenzyl]imidazolidine
is a useful synthetic strategy for the high-efficiency production of medium ring-sized heterocalixarene-type compounds and linear
oligomers which contains at least three benzylimidazolidine units. In addition, it was possible to get access to oligomers which could
not be prepared via several different standard procedures. The 1,3-bis[2’-hydroxybenzyl]imidazolidines used were prepared by a
solvent-free Mannich-type condensation between the macrocyclic aminal TATD and the appropriate phenol. Besides, macrocyclic
aminal TATD was prepared and isolated in pure water in high yield and purity. The preparation of TATD in water becomes important
due to environmental consideration. This is a simple method to prepare cyclic and linear oligomers in good yield and high purity
under solvent-free conditions without the presence of any organic solvent or catalyst.
Biography
Augusto Rivera received his Bachelor’s in Chemistry and Doctorate degree from Universidad Nacional de Colombia in 1976 and Universidad de La Laguna at
Tenerife, Spain in 1979 respectively. He returned (1980) to the Universidad Nacional de Colombia where he became Full Professor. He has over 150 publications
that have been cited over 800 times, and his publication H-index is 16. His research interests are in the area of N-containing medium-ring compounds, design of
novel aminals, new synthetic methodologies and solid-state organic reactions.
ariverau@unal.edu.coAugusto Rivera et al., Trends in Green chem, 3:2
DOI: 10.21767/2471-9889-C1-003