書誌事項
- タイトル別名
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- Catalytic Asymmetric 1,3-Dipolar Cycloaddition Reactions Based on Ylide Formation Reactions
- イリド ケイセイ ハンノウ オ キバン ト スル ショクバイテキ フセイ 1,3-ソウキョクセイ フカカンカ ハンノウ
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<p>Enantioselective 1,3-dipolar cycloaddition reactions of cyclic carbonyl ylides have received a great deal of attention due to their synthetic utilities for asymmetric syntheses of medium-sized polycyclic ethers containing epoxy-bridged moieties such as 8-oxabicyclo[3.2.1]octane derivatives, which are recognized as common structural units in naturally occurring biologically important compounds. Rh(II)-catalyzed intramolecular carbenoid-carbonyl cyclization reactions of diazo carbonyl compounds are one of the most efficient methodologies for generation of cyclic carbonyl ylides. Although some catalytic asymmetric methods using chiral Rh catalysts have been developed, related works on other asymmetric catalysts including a dual catalytic system have rarely been demonstrated. We have developed a new catalytic system, an achiral Rh complex/chiral Lewis acid system, for the asymmetric 1,3-dipolar cycloaddition reactions of cyclic carbonyl ylides with benzyloxyacetaldehyde derivatives, α-keto esters, and 3-alkenoyl-2-oxazolidinones. Our methodology can be applied not only to normal electron-demand cycloadditions but also to inverse electron-demand cycloadditions using electron-rich dipolarophiles such as vinyl ethers and N-methylindoles. This article describes the range of the diazocarbonyl compounds as the cyclic carbonyl ylide precursors and their synthetic applications to chiral indolizidine alkaloids, including (+)-Tashiromine. Asymmetric 1,3-dipolar cycloadditions between diazo imine-derived cyclic azomethine ylides and a 2-acryloyl-3-pyrazolidinone using the dual catalytic system, which afford optically active 8-azabicyclo[3.2.1]octane derivatives, are also reported.</p>
収録刊行物
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- 有機合成化学協会誌
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有機合成化学協会誌 77 (10), 1014-1022, 2019-10-01
公益社団法人 有機合成化学協会
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詳細情報 詳細情報について
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- CRID
- 1390282752342977152
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- NII論文ID
- 130007724803
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- NII書誌ID
- AN0024521X
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- ISSN
- 18836526
- 00379980
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- NDL書誌ID
- 030038474
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
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