Synthesis of enantioenriched γ-quaternary cycloheptenones using a combined allylic alkylation/Stork-Danheiser approach: preparation of mono-, bi-, and tricyclic systems.

Synthesis of enantioenriched γ-quaternary cycloheptenones using a combined allylic alkylation/Stork-Danheiser approach: preparation of mono-, bi-, and tricyclic systems.
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DOI:
10.1039/c1ob06189e
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发表时间:
2012-01-07
影响因子:
3.2
通讯作者:
Stoltz BM
Stoltz BM
中科院分区:
化学3区
文献类型:
--
作者:
Bennett NB;Hong AY;Harned AM;Stoltz BM

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A general method for the synthesis of β-substituted and unsubstituted cycloheptenones bearing enantioenriched all-carbon γ-quaternary stereocenters is reported. Hydride or organometallic addition to a seven-membered ring vinylogous ester followed by finely tuned quenching parameters achieves elimination to the corresponding cycloheptenone. The resulting enones are elaborated to bi- and tricyclic compounds with potential for the preparation of non-natural analogs and whose structures are embedded in a number of cycloheptanoid natural products.
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