WebAug 1, 2024 · The NICS value of sapphyrin is −14.9 ppm [48]. Compared with sapphyrin, 1 – 8 exhibit good aromaticity. These results show that 5 – 8 are more stable than 1 – 4. This also indicates that the incorporation of 2,2′-bithiophene can make a molecule more stable than ones containing DTT. WebSapphyrins, members of a class of macrocycles known as “expanded porphyrins,” also have potential in the fields of photodynamic therapy and magnetic resonance imaging. The 27 …
Smaragdyrins and Sapphyrins Analogues - PubAg
WebA simple rapid synthetic route is developed to synthesize new fused meso-aryl oxasapphyrins in 8-10% yield using easily accessible 3-benzoylpyrrole as the key precursor. A simple rapid synthetic route is developed to synthesize new fused meso-aryl oxasapphyrins in 8-10% yield using easily accessible 3-benzoylpyrrole as the key … WebAug 1, 2000 · An easy synthesis of core-modified meso-aryl smaragdyrins containing oxygen and sulfur in addition to pyrrole nitrogens has been achieved through an alpha-alpha coupling involving modified tripyrrane and dipyrromethane. The complexation behavior of these macrocycles toward anions (Cl-, F-, AMP-) and metal cations (Rh (I), Ni (II)) is … portland type n
Frontiers Stability, Aromaticity, and Photophysical Behaviors of ...
WebSep 4, 2024 · Carbasapphyrin ( Richter and Lash, 1998 ), benzosapphyrin ( Panda et al., 2005 ), and dithiabenzisapphyrin ( Jeong et al., 2008) belong to the most popular sapphyrins series, and they are obtained by modifying the pyrrolic subunits. WebAug 21, 1997 · The porphyrins are a class of naturally-occurring macrocycles and are ubiquitous in our world. As such, they have been called the Pigments of Life. This auspicious designation reflects their importance in numerous biological functions. WebSmaragdyrins and sapphyrins analogues. T Chatterjee, A Srinivasan, M Ravikanth, TK Chandrashekar. Chemical Reviews 117 (4), 3329-3376, 2024. 104: 2024: Manifesto for the routine use of NMR for the liquid product analysis of aqueous CO 2 reduction: from comprehensive chemical shift data to formaldehyde quantification in water. portland tx white pages