Rapid, one-pot synthesis of β-siloxy-α-haloaldehydes.
Rapid, one-pot synthesis of β-siloxy-α-haloaldehydes.
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DOI:
10.1021/ja2066169
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发表时间:
2011-09-14
影响因子:
15
通讯作者:
Yamamoto, Hisashi
中科院分区:
文献类型:
--
作者:
Saadi, Jakub;Akakura, Matsujiro;Yamamoto, Hisashi
The Mukaiyama cross aldol reaction of α-fluoro-, α-chloro-, and α-bromoacetaldehyde-derived (Z)-tris(trimethylsilyl)- silyl enol ethers furnishing anti-β-siloxy-α-haloaldehydes is described. A highly diastereoselective, one-pot, sequential double aldol process, affording novel β,δ-bissiloxy-α,γ-bishaloaldehydes is developed. Reactions are catalyzed by C6F5CHTf2 and C6F5CTf2AlMe2 (0.5–1.5 mol%) and provide access to halogenated polyketide fragments.
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