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THE C4‐PHOTOCYCLODIMERS OF 4,5',8‐TRIMETHYLPSORALEN(TMP)
Author(s) -
Shim Sang Chul,
Lee Sang Sun,
Choi Seung Ju
Publication year - 1990
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/j.1751-1097.1990.tb01677.x
Subject(s) - cycloaddition , furan , moiety , dichloromethane , chemistry , pyrone , fluorescence , photochemistry , stereochemistry , organic chemistry , catalysis , physics , solvent , quantum mechanics
— The photodimerization of 4,5'.8‐trimethylpsoralen(TMP) in dichloromethane solution has been investigated. Three products have been isolated and characterized: (1) a non‐fluorescent homodi‐mer resulting from the C 4 ‐cycloaddition at the pyrone end, with a trans‐anti configuration, (2) a bicyclomer resulting from a double cycloaddition between pyrone and furan moieties, and (3) a fluorescent heterodimer resulting from the C 4 ‐cycloaddition between the furan end of one TMP moiety and the pyrone end of the other, with cis‐syn configuration.