Journal
TETRAHEDRON LETTERS
Volume 45, Issue 4, Pages 703-706Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2003.11.054
Keywords
peroxide formation; aerobic oxidation; quinoline alkaloid; manganese(III) acetate
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The autoxidation of a mixture of 1, 1-diarylsubstituted alkenes 4 and 4-hydroxy-1H-quinolin-2-ones 5 in the presence of a catalytic amount of manganese(Ill) acetate dihydrate in air gave 3,3-bis(2-hydroperoxyethyl)-1H-quinoline-2,4-diones 6 in 31-91% yields together with [4.4.3]propellane-type cyclic peroxides 7 (10-34%). A similar aerobic oxidation of 3-substituted quinolinones 8 yielded cyclic peroxide derivatives 9 and/or 3-hydroperoxyethylated quinolinediones 10 depending on the substituent. The structures of the bis(hydroperoxide) 6 (R-1 = Me, Ar = 4-CIC6H4) and the [4.4.3]propellane 7 (R-1 = Me, Ar = Ph) have been corroborated by X-ray crystallography. (C) 2003 Elsevier Ltd. All rights reserved.
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