書誌事項
- タイトル別名
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- Asymmetric Cycloaddition Reactions Catalyzed by Transition Metal Complexes. New Guidelines for Structural Design of Chiral Catalyst.
- センイ キンゾク ルイスサン ショクバイ オ モチイル フセイ カンジョウ フ
- New Guidelines for Structural Design of Chiral Catalyst
- 触媒構造設計の新しい指針
- 公開日
- 1998
- DOI
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- 10.5059/yukigoseikyokaishi.56.368
- 10.1002/chin.199842299
- 公開者
- 公益社団法人 有機合成化学協会
この論文をさがす
説明
Cationic aqua complexes of a trans-chelating tridentate ligand, (R, R) -4, 6-dibenzofurandiyl-2, 2' -bis (4-phenyloxazoline), and transition metal (II) perchlorates are effective catalysts in the cyclopentadiene Diels-Alder reactions, nitrone cycloadditions, and diazomethane cycloadditions with 3-alkenoyl- 2-oxazolidinones to show excellent enantioselectivities. The active catalyst complex prepared from nickel (II) perchlorate hexahydrate has an octahedral structure with three aqua ligands, and it can be isolated and stored for months without loss of catalytic activity. The aqua complex prepared from Ni (II) or Zn (II) perchlorate results in highly effective chiral amplification in the Diels-Alder reaction. Two mechanisms for amplification are involved for this remarkable chiral amplification : (1) precipitation of S4-symmetric meso-2 : 1 complex between DBFOX/Ph and Ni (II) ion, and (2) associative formation of 1 : 1 heterochiral complexes by the aid of hydrogen bonds based on aqua ligands to produce stable meso oligomers.
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 56 (5), 368-376, 1998
公益社団法人 有機合成化学協会
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キーワード
詳細情報 詳細情報について
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- CRID
- 1390282680254242560
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- NII論文ID
- 10009341448
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- NII書誌ID
- AN0024521X
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- COI
- 1:CAS:528:DyaK1cXjtFGitbk%3D
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- ISSN
- 18836526
- 15222667
- 00379980
- 09317597
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- NDL書誌ID
- 4470618
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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サーチ
- Crossref
- CiNii Articles
- OpenAIRE
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- 抄録ライセンスフラグ
- 使用不可
