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- W2952906327 abstract "3-(p-Tolylsulphinyl)chromone 3a undergoes diastereoselective conjugate addition of lithium dimethylcuprate, producing a mixture of 2-methyl-3-(p-tolylsulphinyl)chroman-4-ones. Heating the mixture to 140°C gives 2-methylchromone in quantitative yield. Desulphurisation of the mixed products from (S)-3a gives (S)-2-methylchroman-4-one with 90% e.e. Chelation of the carbonyl and sulphoxide oxygens during methyl addition accounts for the diastereoselection." @default.
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- W2952906327 date "1990-01-01" @default.
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- W2952906327 title "Conjugate addition to 3-(ptolylsulphinyl)chromone: a route to 2-substituted chromones and chiral substituted chroman-4-ones" @default.
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- W2952906327 doi "https://doi.org/10.1016/s0040-4020(01)96020-x" @default.
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