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An optical isomer of 2,3-ferrocenocyclopentenone (X) has been synthesized from methyl (1S) (−)-2-hydroxy-methylferrocenecarboxylate via a six-step synthesis. The absolute configuration of (−)-X has been confirmed by a comparison of its CD and ORD curves with those of the corresponding ferrocene homologs previously recorded. The mass spectrum of X is also discussed.
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Shirafuji et al. (1972) studied this question.
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