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- W2953090483 abstract "Optically active 6-amino-2-cycloheptenone 5 has been prepared from ethyl 2(E),6-heptadienoate where the Michael addition of a chiral amine, Ti(II)-mediated intramolecular nucleophilic acyl substitution reaction and FeCl3-mediated ring expansion are the key steps. The compound 5 undergoes highly diastereoselective conjugate addition of a Grignard reagent in the presence of a catalytic amount of Li2Cu(CN)Cl2 to provide the corresponding cis-adducts which, in turn, are converted in to 6-alkyl substituted 2-cycloheptenones by treatment with p-TSA." @default.
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- W2953090483 date "1999-05-01" @default.
- W2953090483 modified "2023-10-09" @default.
- W2953090483 title "Synthesis of optically active 6-amino-2-cycloheptenone as a convenient chiral building block for the preparation of 6-alkyl-2-cycloheptenone" @default.
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- W2953090483 doi "https://doi.org/10.1016/s0040-4039(99)00711-x" @default.
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