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- W1489580141 abstract "Dialkylation of cyclohexanone and spiro[5,5]undecanones with 1,5-dibromopentane or 1,1-bis(2-bromo-ethyl)cyclohexane (IV) gave seven di-, tri- and tetraspiro ketones (V–XI), which embody four new polyspiro ring systems. Four polyspiro ketones could be reduced according to the Wolff-Kishner method giving three new polyspiro hydrocarbons (XXI—XXIII), while reduction with lithium aluminium hydride gave polyspiro alcohols (XXIV and XXV). One of the hydrocarbons, the linear dispiro[5,2,5,2]hexadecane (XXI) has been synthesized independently via the double Michael condenstaion between spiro[5,5]undecane-2,4-dione (XII) and divinyl ketone. The IR carbonyl frequencies of the spiro ketones and the PMR spectra of the spiro ketones and hydrocarbons are discussed." @default.
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- W1489580141 date "1964-01-01" @default.
- W1489580141 modified "2023-10-09" @default.
- W1489580141 title "Spiranes—III" @default.
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- W1489580141 doi "https://doi.org/10.1016/s0040-4020(01)90834-8" @default.
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