作者:Masahiko Taniguchi、Han-Je Kim、Doyoung Ra、Jennifer K. Schwartz、Christine Kirmaier、Eve Hindin、James R. Diers、Sreedharan Prathapan、David F. Bocian、Dewey Holten、Jonathan S. Lindsey
DOI:10.1021/jo025843i
日期:2002.10.1
We describe a two-step conversion of C-alkylated zinc chlorins to zinc oxochlorins wherein the keto group is located in the reduced ring (17-position) of the macrocycle. The transformation proceeds by hydroxylation upon exposure to alumina followed by dehydrogenation with DDQ. The reactions are compatible with ethyne, iodo, ester, trimethylsilyl, and pentafluorophenyl groups. A route to a spirohexyl-substituted
我们描述了C-烷基化二氢卟酚锌向二氧氯卟啉的两步转化,其中酮基位于大环的还原环(17位)上。暴露于氧化铝后通过羟基化反应进行转化,然后用DDQ脱氢。该反应与乙炔,碘,酯,三甲基甲硅烷基和五氟苯基相容。还已经开发了一种被螺己基取代的二氢卟酚/氧代二氢卟酚的途径。代表性的二氢卟酚和氧代二氢卟酚的特征在于静态和时间分辨吸收光谱和荧光光谱,共振拉曼光谱和电化学。含氧氯酸锌(Phi(f)= 0.030-0.047)或游离碱(Fb)含氧氯类化合物(Phi(f)= 0.13-0)的荧光量子产率。16)分别与四苯基卟啉锌(ZnTPP)或游离碱四苯基卟啉(FbTPP)相当。氯氧锌的激发态寿命(tau = 0.5-0.7 ns)比ZnTPP的平均低4倍,而Fb氯氧磷的寿命(tau = 7.4-8.9 ns)比ZnTPP短约40%。 FbTPP。氧氯锌的时间分辨吸收光谱表明,系统间交叉的收率> 70%。铜氧氯铜