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Flash photolysis study of 2,4,6-trimethylpyrylium and 2,4,6-triphenylpyrylium ions: evidence for oxoniabenzvalene intermediate

✍ Scribed by A. Sivakumar; S. Parimala; P. Ramamurthy


Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
361 KB
Volume
94
Category
Article
ISSN
1010-6030

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All previously reported examples of 4-hydroxypyrylium cation photoisomerizations have been shown to follow the phototransposition patterns shown below in which substituents in the 2 and 6 positions of the reactants are found in the 4 or 5 positions of the products.