ISSN:
0009-2940
Keywords:
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Sterically Hindered Free Radicals, XIII Wittig's Radical 4-Benzoyltriphenylmethyl and Analogous Mono-4-substituted Trityl RadicalsThe 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°C is surprisingly high (≦ 33%, 0.01 M), donors and acceptors being effective here likewise. ESR data are given and discussed.
Notes:
Die mono-4-R-Triphenylmethyl-Radikale 1, 8b - f, R = tBu, CF3, COMe, COPh, CN, Me, bzw. deren chinoide Dimere 4, 9b - f werden dargestellt, überwiegend erstmalig. Die letzteren dissoziieren bei 25°C überraschend stark (≦ 33%, 0.01 M), wobei Donoren gleichsinnig wirken wie Akzeptoren. ESR-Daten werden angegeben und diskutiert.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19851180334
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