書誌事項
- タイトル別名
-
- Strategic Use of Difference of Valence of Gold Catalysts: Development of Cyclization Reactions Oriented toward Synthetic Diversity Using Propargylic Alcohols
- カスウ ノ コトナル キン ショクバイ ノ センリャクテキ ナ リヨウ : プロパルギルアルコール オ テンプレート ト スル ゴウセイ ニ オケル タヨウセイ オ シコウ シタ カンカ ハンノウ ノ カイハツ
この論文をさがす
抄録
<p>Cyclization reactions oriented toward synthetic diversity using propargylic alcohols have been developed by employing difference of valence of gold catalysts. Thus, strategic use of oxophilic (hard) gold(III) and π-philic (soft) gold(I) catalysts provides access to two types of cyclic ethers/piperidines from propargylic alcohols via intramolecular reactions. Treatments of propargylic alcohols with an oxophilic gold(III) catalyst (AuBr3) result in cyclization to furnish cyclic ethers/piperidines/azepane bearing an acetylenic moiety, due to activation of the propargylic hydroxyl group by coordination of gold(III). On the other hand, similar treatments of propargylic alcohols with a π-philic gold(I) catalyst (Ph3PAuNTf2) induce Meyer-Schuster rearrangement, triggered by activation of the triple bond by coordination of gold(I), to afford α,β-unsaturated ketones, which undergo intramolecular oxa-/aza-Michael addition to give cyclic ethers/piperidines/azepanes having a carbonyl group. Expanding this strategy of intramolecular reactions to intermolecular reactions, synthesis of oxazoles/dihydropyrans from propargylic alcohols with amides/dicarbonyl compounds was achieved via gold(III)-catalyzed propargylic substitution and cycloisomerization. In addition, synthesis of 1,3-diarylindenes was achieved via dehydrative Friedel-Crafts reaction followed by Nazarov-type cyclization from propargylic alcohols with aromatic rings by gold(III)-catalyst.</p>
収録刊行物
-
- 有機合成化学協会誌
-
有機合成化学協会誌 79 (7), 652-663, 2021-07-01
公益社団法人 有機合成化学協会
- Tweet
キーワード
詳細情報 詳細情報について
-
- CRID
- 1390288613514984704
-
- NII論文ID
- 130008062781
-
- NII書誌ID
- AN0024521X
-
- ISSN
- 18836526
- 00379980
-
- NDL書誌ID
- 031609305
-
- 本文言語コード
- ja
-
- データソース種別
-
- JaLC
- NDL
- Crossref
- CiNii Articles
-
- 抄録ライセンスフラグ
- 使用不可