TY - DATA T1 - Synthesis of 21,23-Selenium- and Tellurium-Substituted 5‑Porphomethenes, 5,10-Porphodimethenes, 5,15-Porphodimethenes, and Porphotrimethenes and Their Interactions with Mercury PY - 2015/04/17 AU - Sohail Ahmad AU - Kumar Karitkey Yadav AU - Soumee Bhattacharya AU - Prashant Chauhan AU - S. M. S. Chauhan UR - https://acs.figshare.com/articles/journal_contribution/Synthesis_of_21_23_Selenium_and_Tellurium_Substituted_5_Porphomethenes_5_10_Porphodimethenes_5_15_Porphodimethenes_and_Porphotrimethenes_and_Their_Interactions_with_Mercury/2175505 DO - 10.1021/acs.joc.5b00007.s001 L4 - https://ndownloader.figshare.com/files/3809431 KW - 1 H NMR spectroscopy KW - BF KW - unsymmetrical KW - mass spectrometry KW - COSY KW - selenophene KW - 13 C NMR KW - Selena KW - CHN analysis KW - DDQ KW - IR KW - Porphodimethene KW - porphomethene KW - UV KW - 1 H KW - porphodimethene KW - porphotrimethene N2 - The 3+1 condensation of symmetrical 16-Selena/telluratripyrranes with symmetrical selenophene-2,5-diols/tellurophene-2,5-diols in the presence of BF3-etheratre or BF3-methanol followed by oxidation with DDQ gave 5,10-porphodimethenes, whereas the process with unsymmetrical selenophene-2,5-diols/tellurophene-2,5-diols gave 5-porphomethenes. In addition, the reaction of unsymmetrical 16-Selena/telluratripyrranes with symmetrical selenophene-2,5-diols/tellurophene-2,5-diols gave the corresponding porphotrimethenes, whereas the process with unsymmetrical selenophene-2,5-diols/tellurophene-2,5-diols gave the 5,15-porphodimethenes. The structures of different products were characterized by IR, 1H and 13C NMR, 1H–1H COSY, CHN analysis, and mass spectrometry. The binding of mercury with the calix[4]­phyrins mentioned above had been observed in the decreasing order of porphodimethenes > porphomethenes > porphotrimethenes by UV–vis and 1H NMR spectroscopy. ER -