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Knock-on Synthesis of Tritopic Calix[4]pyrrole Host for Enhanced Anion Interactions Mandeep Kaur Chahal, Jan Labuta, Václav Březina, Paul A. Karr, Yoshitaka Matsushita, W Webre, Daniel Tony Payne, Katsuhiko Ariga, Francis D'Souza and Jonathan P. Hill Abstract Interactions of anionic guests with a tritopic peripherally functionalized conjugated calix[4]pyrrole host (1) prepared using a regioselective synthetic method is reported.
?-Dicyanovinyl substituted porphyrinogen (OxP-MN) were synthesized and utilized as novel multifunctional sensor for the detection of biologically and environmental important analytes. OxP-MN (1) acts as selective reversible probe for rapid colorimetric detection of picric acid (PA) among other nitroaromatics by switching between two porphyrinoid states. This system displayed higher ?2 value of 1.7 x 10^8 M?2 and are able to detect PA down to 1.12 ppm (4.99 ?M).
β-functionalization of meso-tetrakis(3,5-di-tert-butyl-4-hydroxyphenyl)porphyrin with electron acceptors such as formyl and dicyanovinyl has been reported for the first time. 2-formyl-5,10,15,20-tetrakis(3’,5’-di-tert-butyl-4’-hydroxyphenyl) porphyrinatocopper(II) (Cu-TDtBHPP-CHO) crystallizes in triclinic space group P1 [a = 10.8479(4) Å, b = 14.6207(5) Å, c = 15.9745(5) Å, V = 2198.97(13) Å3] exhibited almost planar structure and square planar geometry.
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