Example of predissociation between separate chromophores in 5-(2-halogenoaryl)-1,3-diphenyl-Δ<sup>2</sup>-pyrazolines
作者:James Grimshaw、A. Prasanna de Silva
DOI:10.1039/c39800001236
日期:——
Photoexcited 5-(2-iodophenyl)-1,3-diphenyl-Δ2-pyrazoline undergoes carbon–iodine bond homolysis via energy transfer from the 1,3-diphenylpyrazoline moiety to a dissociative state, whereas photoexcited 5-(5-bromo-3-methoxycarbonylphenyl)-1,3-diphenyl-Δ2-pyrazoline undergoes electron transfer.
An intermediate in the aryl halide photocyclization process detected by flash photolysis
作者:James Grimshaw、Jadwiga Trocha-Grimshaw
DOI:10.1039/c39840000744
日期:——
A Transient intermediate which decays in a first-order process with k= 12.6 s–1 in the photochemical cyclization of 5-(2-chlorophenyl)-1,3-diphenylpyrazole has been observed; because of the relatively long lifetime this is probably a cyclohexadienyl radical.
在5-(2-氯苯基)-1,3-二苯基吡唑的光化学环化反应中,观察到一个瞬态中间体在一级过程中以k = 12.6 s -1衰变。由于相对较长的寿命,这可能是环己二烯基。
Black, David St.C.; Deacon, Glen B.; Edwards, Gavin L., Australian Journal of Chemistry, 1991, vol. 44, # 12, p. 1771 - 1781
作者:Black, David St.C.、Deacon, Glen B.、Edwards, Gavin L.