Short communication, Note

https://doi.org/10.1515/acph-2015-0017

Thermal analysis of N-carbamoyl benzotriazole derivatives

IVAN KOS ; University of Zagreb, Faculty of Pharmacy and Biochemistry, 10000 Zagreb, Croatia
TIN WEITNER ; University of Zagreb, Faculty of Pharmacy and Biochemistry, 10000 Zagreb, Croatia
SANDRA FLINČEC GRGAC ; University of Zagreb, Faculty of Textile Technology, 10000 Zagreb, Croatia
JASNA JABLAN orcid.org/0000-0003-4741-0819 ; University of Zagreb, Faculty of Pharmacy and Biochemistry, 10000 Zagreb, Croatia

Abstract

Thermal properties of N-carbamoyl benzotriazole derivatives and N,N',N''-tribenzyloxyisocyanuric acid were investigated using thermogravimetric analysis and differential scanning calorimetry. The results revealed a difference between structural analogs of N-carbamoyl benzotriazole derivatives. They seem to be in agreement with the previously proposed formation of N,N',N''-tribenzyloxyisocyanuric acid from 1-(N-benzyloxycarbamoyl) benzotriazole, via an intermediary N-benzyloxyisocyanate acid, during heating. Substantially different thermal properties were observed for structural analogues, 1-(N-methoxycarbamoyl) benzotriazole and 1-(N-ethoxycarbamoyl) benzotriazole. In contrast to N-benzyloxyisocyanate, no corresponding reactions were observed for their decomposition products, i.e., methoxyisocyanate and ethoxyisocyanate.

Keywords

1-(N-benzyloxycarbamoyl) benzotriazole; 1-(N-methoxycarbamoyl) benzotriazole; 1-(N-ethoxycarbamoyl) benzotriazole; N,N',N''-tribenzyloxyisocyanuric acid; thermogravimetric analysis; differential scanning calorimetry; ATR-FTIR

Hrčak ID:

128996

URI

https://hrcak.srce.hr/128996

Publication date:

30.6.2015.

Visits: 1.263 *