Archiv der Pharmazie p. 551 - 553 (1988)
Update date:2022-08-03
Topics:
Weber, Horst
Wollenberg, Eva
In contrast to the aminopyrazolones 1 the pyrazolones 3 and 5 are stable against singlet oxygen.However, no difference is observed in reaction of the title compounds 1, 3 and 5 with sodium metaperiodate forming the oxidation products 2, 4 and 6, respectively.The (1)H- and (13)C-nmr-spectra of 4 as well as those of 2 are complex due to the existence of rotameric isomers at room temperature.
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Doi:10.1021/jm900634w
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(1988)Doi:10.1021/ol901504p
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(2009)
