Indirect Electrophilic Substitutions of p-Deficient Heteroaromatics to Prepare Novel Compounds for High-Tech Applications

Alan R. Katritzky, Peter Czerney, Sergey N. Denisenko, and Volker Jesser

Figure 1. Benzotriazole substituted heterocycles used in electrophilic substitution

Pyranes:

  

Benzopyranes:

 

Xanthenes, thioxanthene, N-methylacridine