مشروع البحث: Phenol oxidation using ruthenium and iridium catalysis
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المساهمين
الممولين
رقم التعريف
168
الباحث
هدى رمضان
الوصف
We synthesised 4 different tri-substituted phenols: A (2-(pent-4-en-1-yl)phenol, B (4-methoxy-2-(pent-4-en-1-yl)phenol, C (curcuphenol), and D (curcuphenol). While phenols A, B, and C possessed terminal olefins, phenol D possessed a di-methyl substituted olefin. In order to catalyse the photochemical cycloaddition of these phenols, [Ir(dF(CF3)ppy)2(dtbbpy)(PF6), Ru(bpy)3(BF4)2, and Ru(bpy)3Cl2 catalysts were synthesised. Subsequently, we explored the Ir and Ru catalysed photochemical oxidation of each phenol, with the aim of synthesising [5 + 2] cycloaddition bridged bicyclic systems. While cycloadducts were not observed, it became apparent that the reduction of the metal centre before interaction with the phenol might not be a plausible pathway. Thus, future endeavours will include the use of cationic moieties and salts, to elicit metal oxidation prior to phenol-metal interaction in order to foster the formation of a pentadienyl radical cation intermediate. It is envisaged that this pathway will favour cycloaddition.
April
الكلمات الدالة
Phenol oxidation using ruthenium and iridium catalysis