第一部份
鈦金屬在有機合成上是普遍使用的試劑，而四氯化鈦( TiCl4 )由於可做為路易士酸，因此在催化特定反應上扮演很重要的角色。我們在使用TiCl4/TBHP氧化一系列苯醇的實驗中，發現當苯環上含有推電子取代基時，反應將不會走氧化路徑，而是行親核取代反應。在此研究中我們使用不同的推電子取代基之苯醇及親核試劑來證實TiCl4催化醇類進行親核取代反應的途徑。
第二部份
利用TiCl4催化之特性將苯醛合成一系列過氧縮醛化合物。

Part 1
Since titanium tetrachloride can be a strong lewis acid and titanium is a commonly used reagent in organic synthesis, titanium plays a very important role in catalyzing some specific reaction. In the attempt to oxidize a series of benzyl alcohols with TiCl4/TBHP, we discover that a nucleophilic substitution reaction instead of an oxidation reaction takes place for benzene with an electron donating substituent group. In this research, we use benzyl alcohols with donating substituents and nucleophilic reagents to prove that TiCl4 activates alcohol in the nucleophilic substituent reaction.
Part 2
Use the catalytic characteristic of TiCl4 to synthesize a series of peroxy acetals from benzaldehyde.

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