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- W1983417963 abstract "Synthesis of methyl 8-methoxy-2-oxospiro[4.5]deca-6,8-diene-3-carboxylate (14) in eight steps from p-methoxycinnamic acid is described. The method involves cyclisation of the 1.1 -disubstituted-cyclohexa-2,4-diene (2d) which is readily obtained from tricarbonyl[η-1–5-1-(3′-methoxycarbonylpropyl)-4-methoxycyclohexa-2,4-dienylium]iron hexafluorophosphate (3b). A similar series of reactions starting from 4-(p-methoxyphenyl)butyric acid leads ultimately to methyl 3-methoxy-8-oxospiro[5.5]undeca-1,3-diene-9-carboxylate (16). In the course of investigating model systems the trichodermin intermediate (1c) has also been synthesised." @default.
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- W1983417963 date "1979-01-01" @default.
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- W1983417963 title "Organoiron complexes in organic synthesis. Part 3. An approach to the synthesis of spirocyclic compounds from tricarbonyldieneiron complex intermediates" @default.
- W1983417963 doi "https://doi.org/10.1039/p19790001255" @default.
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