Triptycene-like behaviour of tertiary 9,10-dihydro-9-amthrols
作者:Bernard Miller、Virginia Creedon Marhevka
DOI:10.1016/0040-4039(81)89002-8
日期:1981.1
Secondary alcohols in the 9,10-dihydro-9-anthrol series frequently undergo acid-catalyzed elimination and substitution reactions more rapidly than do corresponding tertiaryalcohols - a phenomenon attributed to predominant existence of the tertiaryalcohols in triptycene-like conformations with the hydroxy groups in pseudoequatorial positions.
Photochemistry and photophysics of ketyl radicals containing the anthrone moiety
作者:J. C. Netto-Ferreira、W. F. Murphy、R. W. Redmond、J. C. Scaiano
DOI:10.1021/ja00167a053
日期:1990.5
employed to produce the corresponding ketylradicals 1-4 by photoreduction in the presence of suitable hydrogen donors. The excited-state behavior of these radicals has been examined with use of two-laser, two-color techniques. The lifetimes for the excitedketylradicals, ranging from 7.9 ns for 3 to 33 ns for 2, are longer than that observed for benzophenone ketyl, thus suggesting that conformational