Bulletin of the Chemical Society of Japan p. 1010 - 1014 (1980)
Update date:2022-08-05
Topics:
Hiyama, Tamejiro
Shinoda, Masaki
Tsukanaka, Masao
Nozaki, Hitosi
Treatment of (3,3-dialkyl-2,2-dichlorocyclopropyl)methanols with hydrobromic acid gives 2-cyclopentenones through postulated intermediates, 3-chlorocyclopentadienyl cations.Another method which should give the same cationic intermediates involves trifluoroacetic acid catalyzed reaction of 3,3-dichloro-1-alken-4-ols.This is found to be particularly useful for cyclopentenone annulation.
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Doi:10.1071/CH9800343
(1980)Doi:10.1039/jr9470001656
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(2004)Doi:10.1021/ja00538a072
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(1935)
