1613337-25-9Relevant academic research and scientific papers
Neo-N-confused Phlorins and Phlorinone: Rational Synthesis and Tunable Properties
Kong, Jiahui,Shao, Jiewei,Li, Chengjie,Qi, Dongdong,Li, Minzhi,Liang, Xu,Zhu, Weihua,Jiang, Jianzhuang,Xie, Yongshu
, p. 650 - 653 (2017)
By the acid-catalyzed [2 + 2] condensation, an unprecedented neo-N-confused phlorin (neo-NCphlorin 1) was successfully synthesized. By treating 1 with N-chlorosuccinimide, the corresponding chloro-substituted neo-NCphlorin (1-Cl) was obtained. The oxidization of 1 with FeCl3 afforded the neo-N-confused phlorinone (neo-NCphlorinone 2), which bears a relatively coplanar conformation, different from the highly distorted ones observed for 1 and 1-Cl. Notably, 2 shows striking long-wavelength absorption beyond 1300 nm upon addition of TBAF.
Synthesis of a doubly SO2-fused phlorin: Tuning the structure and properties by the SO2 groups
Li, Chengjie,Liu, Xiujun,Shao, Jiewei,Su, Guangxian,Xie, Yongshu
, p. 799 - 806 (2018)
A doubly SO2-fused phlorin 4 has been synthesized by the [2 + 2] condensation of dipyrromethanecarbinol 2 and SO2-fused dipyrromenthane 3 in the presence of TFA, followed by DDQ oxidation. The SO2-fused phlorin 4 has been characterized by absorption, fluorescence, mass and NMR spectra, as well as X-ray analysis. Compared to the β-unsubstituted phlorin 5, the SO2-fused phlorin 4 exhibits a red-shifted absorption spectrum (around 12 nm), a more distorted molecular conformation, as well as nice photostability even with an electron-donating meso-3,5-di-tert-butylphenyl group. The titration of 4 and 5 with TBAF has been monitored by absorption spectroscopy. The deprotonated phlorin 4 shows a peak at 870 nm which is red shifted by 26 nm compared to that of deprotonated 5.
Biladiene type rare earth complex as well as preparation method and application thereof
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, (2021/05/19)
The invention discloses a biladiene type rare earth complex and a preparation method and application thereof. The structural formula of the biladiene type rare earth complex is shown in the specification, R is an electron withdrawing group, and Ln is a la
Phlorins bearing different substituents at the sp3-hybridized meso-position
Bruce, Alexandra M.,Weyburne, Emily S.,Engle, James T.,Ziegler, Christopher J.,Geier III, G. Richard
, p. 5664 - 5672 (2014/07/08)
Phlorins bearing different substituents at the sp3-hybridized meso-position were investigated. The extent to which different substituents at this unique position can influence phlorin spectroscopic properties, structure, and stability is of int
