29481-27-4Relevant academic research and scientific papers
Ipso attack in the nitration of 5-bromo- and 5-methyl-2-cyclopropylthiophenes
Mochalov,Surikova,Abdel'razek,Zakharova,Shabarov
, p. 132 - 136 (1981)
It was established that 5-bromo-2-cyclopropylthiophene and 5-methyl-2-cyclo-propylthiophene undergo transformations during nitration with nitric acid in acetic anhydride that are a consequence of ipso attack of the nitryl cation in the 2 or 5 positions of the thiophene rings of the starting compounds.
