在第一個章節裡,我們研究利用金催化劑,催化縮醛與烯烴進行氧雜波瓦羅夫反應。我們使用IPrAuCl與AgSbF6組合的IPrAuSbF6來催化反應,可以成功得到反應後的Dihydrobenzopyran產物,並有著許多不同的取代基。因此我們能夠運用此方法在對於合成天然物如:Flavan等有很大的幫助。 我們進一步將反應透過手性金催化劑(R)-BINAP(AuCl)2搭配助催化劑NaBARF來進行反應,使產物能夠有特定的鏡像選擇性。 在第二個章節中,我們利用銅催化劑在氧氣系統中催化N-羥胺分子進行氧化反應,可以得到硝酮中間產物,接著再與親核試劑進行一鍋化反應。 另一方面我們改變N-羥胺基質的結構後一樣進行銅催化需氧氧化反應,分別與水和醇類分子擔任親核試劑的角色進行反應,可以成功地得到β-oxoamides及3-substituted 3-amino-2-en-1-ones兩種不同產物。接著我們改變溶劑和反應溫度後,可以開發出一涉及克萊森重排的連續反應,進而再接著提供出具有分子複雜性的新產物2-allyl-3-oxoamides。
We reported new oxa-Povarov reactions involving readily available diaryloxymethylacetals and benzothiophene-substituted alkenes; their [4+2]-cycloadditions were efficiently catalyzed by IPrAuSbF6 with high diastereoselectivity.And this new synthesis is to provide a rapid entry to a dihydrobenzopyran core that is commonly found in numerous biologically active natural compounds. Furthermore, we also used chiral catalyst (R)-(+)-BINAP(AuCl)2 with a cocatalyst NaBARF to catalyze this synthesis. We discovered copper-catalyzed aerobic oxidations of N-hydroxylamines to form nitrones. And with nucleophiles, we could get tetra-substituted nitrone by an one-pot reaction. On the other hand, we changed the structure of N-hydroxylamine substrate to undergo copper-catalyzed aerobic oxidations, with nucleophilic reagents like water and alcohols, we could successfully get β-oxoamides and 3-substituted 3-amino-2-en-1-ones two different products. Then we changed the reaction condition, we provided new products 2-allyl-3-oxoamides with molecular complexity, which involving a Claisen rearrangement.