Open AccessSÍNTESE VERDE DE 1,3-DIARILTRIAZENOS SIMÉTRICOS E ASSIMÉTRICOS EM VINAGRE
Author(s) -
Leonardo C. Messina,
Álvaro T. Omori
Publication year - 2020
Publication title -
química nova
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.214
H-Index - 73
eISSN - 1678-7064
pISSN - 0100-4042
DOI - 10.21577/0100-4042.20170655
Subject(s) - substituent , yield (engineering) , chemistry , decomposition , green chemistry , reaction mechanism , nuclear chemistry , organic chemistry , materials science , catalysis , metallurgy
An adaptation on the classical synthesis methodology for 1,3-diaryltriazenes for a 4-hour experimental class has been proposed with green chemistry principles in mind by using commercial vinegar as a source for diazotization with NaNO2 and keeping the reaction workup to simple vacuum filtration. Several anilines with different substituent groups were used to evaluate how they affect the synthesis based on their electron-donating/withdrawing characteristics. The decomposition of the triazenes in acidic media was also monitored via TLC. On the overall, the reactions came up with medium to high yield and high purity. Experimental procedure, reaction mechanism and other potential discussions such as green chemistry principles and effects of electron-donating/withdrawing groups are suitable for undergraduate students.