6922-88-9Relevant academic research and scientific papers
Sterically Hindered Free Radicals, XIII. Wittig's Radical 4-Benzoyltriphenylmethyl and Analogous Mono-4-substituted Trityl Radicals
Zarkadis, Antonios K.,Neumann, Wilhelm P.,Uzick, Wolfram
, p. 1183 - 1192 (2007/10/02)
The mono-4-R-triphenylmethyl radicals 1, 8b-f, R = tBu, CF3, COMe, COPh, CN, Me, or their quinonoid dimers 4, 9b-f are prepared, most of them for the first time.The degree of dissociation of the latter at 25 deg C is surprisingly high (=/ 33percent, 0.01 M), donors and acceptors being effective here likewise.ESR data are given and discussed.
