Journal of Organic Chemistry p. 12692 - 12699 (2019)
Update date:2022-08-29
Topics:
Guin, Avishek
Gaykar, Rahul N.
Bhattacharjee, Subrata
Biju, Akkattu T.
The synthetic utility of NaN3 as the azide component in the [3 + 2] annulation with arynes generated from 2-(trimethylsilyl)aryltriflates resulting in the transition-metal-free synthesis of N-H and N-aryl benzotriazoles has been demonstrated. Using CsF as the fluoride source in CH3CN, the N-H benzotriazoles are formed in high selectivity instead of the expected azidobenzene. Interestingly, N-aryl benzotriazoles are formed using KF and THF as solvent in an open-flask reaction. Moreover, a method for the N1-arylation of benzotriazole is also presented.
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