In an article, author is Shang, Fangjian, once mentioned the application of 5232-99-5, Computed Properties of C18H15NO2, Name is Ethyl 2-cyano-3,3-diphenylacrylate, molecular formula is C18H15NO2, molecular weight is 277.32, MDL number is MFCD00027364, category is Triazoles. Now introduce a scientific discovery about this category.
Theoretical insights into the synthesis reaction mechanism of 1,2,3-triazole based on sakai reaction
Sakai reaction is an important method to synthetize 1,2,3-triazole by the addition of alpha, alpha-dichlorotosylhydrazones and amines. However, the difficulty of introducing the 1,2,3-triazole ring is often affected by the type of amine reagent. More calculation results and detailed mechanisms are used to screen which amine is more suitable for the Sakai reaction. In this study, the DFT calculations were carried out to study the reaction mechanism of Sakai reaction. Depending on the type of amines, two different paths for Sakai reaction were revealed by our calculations. For the triazolamine, an H atom must transfer from the amines to the diazine synchronously when the new C-N bond is formed. The transformation from trans- to cis- is necessary for the intermediate vinyldiazine. For aniline, the amine molecule can combine with trans-vinyldiazine directly without an H transfer due to the formation of a structure that is similar to NH4+ ion. (C) 2020 Elsevier Ltd. All rights reserved.
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