带有特定取代基模式的中观取代的反式A 2 B 2卟啉是基于卟啉的仿生系统和分子材料的关键组成部分,可用于构建定义明确的基于卟啉的体系结构。逐步和合理合成功能化反式A 2 B 2的新方法报道了卟啉,其中首次利用了供体-受体取代的环丙烷前体(d-a环丙烷)。所提供的三种d-a环丙烷很容易以克数形式获得,并且在与过量吡咯的反应中用作醛当量,以提供相应的二吡咯甲烷(DPM)。合成了三种DPM,产率为60-74%。它们在没有光和空气的情况下以纯化形式稳定,随后与各种带有给电子或吸电子取代基的脂族和芳族醛缩合,然后氧化形成相应的反式-A 2 B 2。卟啉。合成了14种功能化的卟啉,产率为14-31%,表明合成方法的范围很广。强调了引入关键官能团的可能性,其使得随后的这些卟啉具有诱导生物活性的部分的修饰。可以通过添加一个卟啉外围双键,使用芳基的取代基或通过两个内消旋基上的甲氧羰基进行四吡咯的修饰取代基。
带有特定取代基模式的中观取代的反式A 2 B 2卟啉是基于卟啉的仿生系统和分子材料的关键组成部分,可用于构建定义明确的基于卟啉的体系结构。逐步和合理合成功能化反式A 2 B 2的新方法报道了卟啉,其中首次利用了供体-受体取代的环丙烷前体(d-a环丙烷)。所提供的三种d-a环丙烷很容易以克数形式获得,并且在与过量吡咯的反应中用作醛当量,以提供相应的二吡咯甲烷(DPM)。合成了三种DPM,产率为60-74%。它们在没有光和空气的情况下以纯化形式稳定,随后与各种带有给电子或吸电子取代基的脂族和芳族醛缩合,然后氧化形成相应的反式-A 2 B 2。卟啉。合成了14种功能化的卟啉,产率为14-31%,表明合成方法的范围很广。强调了引入关键官能团的可能性,其使得随后的这些卟啉具有诱导生物活性的部分的修饰。可以通过添加一个卟啉外围双键,使用芳基的取代基或通过两个内消旋基上的甲氧羰基进行四吡咯的修饰取代基。
coordination/metathesis reactions allow the stepwise accumulation of multiporphyrin arrays on the goldelectrode. A successive increase in absorption over a wide wavelength range occurred after each accumulation step of Zn2(ImP)2 on the goldelectrode, and cathodic photocurrent generation was enhanced in the aqueous electrolyte system, containing viologen as an electron carrier. The significant increase of the photocurrent
Covalent Linking of Coordination-Organized Slipped Cofacial Porphyrin Dimers
作者:Atsushi Ohashi、Akiharu Satake、Yoshiaki Kobuke
DOI:10.1246/bcsj.77.365
日期:2004.2
Coordination-organized porphyrindimers of 5,15-his[2-(allyloxycarbonyl)ethyl]- and bis[3-(allyloxy(propyl]-20-( 1-methyl-2-imidazolyl)porphyrinatozinc were covalentlylinked by an intramolecular olefin metathesis reaction in excellent yields (93-98%). It was found that the yields of the intramolecular metathesis reaction depended strongly on the molecular length of the substituent at the 5 and 15
Towards NO-free Regulation of sGC: Design and Synthesis of<i>trans</i>-AB-porphyrins
作者:Sabina Smoleń、Dominika J. Walaszek、Maksymilian Karczewski、Emil Martin、Dorota Gryko
DOI:10.1002/ijch.201500019
日期:2016.3
its amphiphilic derivatives markedly activate the enzyme. To date, all porphyrins studied are naturally occurring compounds or their derivatives, possessing substituents at β‐positions. Such porphyrins are of limited abundance and their derivatives or analogues are difficult to synthesize, while synthetic meso‐substituted porphyrins are easy to prepare. Thus, we have decided to study their effect on
groups at both ends of the porphyrin self-assembles exclusively into a light-harvesting cyclic trimer (N-(1-Zn)(3)) through complementary coordination of imidazolyl to zinc(II). Because only the two terminal porphyrins in 1-Zn are employed in ring formation, macrocycle N-(1-Zn)(3) leaves three uncoordinated porphyrinatozinc(II) groups as a scaffold that can accommodate ligands into the central pore. A
A supramolecular triad consisting of self-assembled imidazolyl-zinc-porphyrin dimer, ferrocene, and fullerene was successfully constructed, resulting in long-lived charge separated species after efficient photoinducedelectron transfer and charge shift reactions.