Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 5 of 5 for “"CH-Activation"”.
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The synthesis of N-substituted ferrocenes and CH activation towards the synthesis of Organosilanols
… ortho-silylation of ferrocenyl oxazolines was achieved in poor to good yields and moderate to high diastereomeric ratios. To the best of our knowledge, this is the first catalytic and diastereoselective C–H activation on ferrocenes. After screening many other directing groups, only ferrocenyl …
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CH activation and CH2 double activation of indolines: towards the synthesis of aspidospermidine and aspidofractinine
… framework of aspidofractinine has proven more challenging, with only 5 total syntheses to date. These synthetic approaches are discussed in Chapter 1 together with the pharmacological activity exhibited within the Aspidosperma alkaloid series.<br/><br/>Chapter 3 details the challenges of …
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Reactivity of Aluminum Carbenoid with Unsaturated Substrates
… (IV-13). Addition of pyridine to such species results in [2+2] cycloaddition products analogous to III-6, except for the case of p‐tolyl benzoate when a migration of the alkoxy group from the ester moiety accompanied by hydrogen transfer from pyridine preserves the aromaticity within …
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Palladium(II)-Catalysed sp 3 C–H Functionalisation of Hindered Amines and its Application in Synthesis of Astemizole Analogues
… a sterically promoted palladium-catalysed C–H activation. A range of functional groups are shown to be compatible with this catalytic process, and with exclusive regioselectivity for the terminal ethyl sp 3 C–H in most cases. This method allows an overall incorporation of a carboxyl group to …
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Studies on transition metal-catalysed oxidations with hydrogen peroxide as terminal oxidant
… the presence of non-toxic, inexpensive metals, such as iron, effects homogeneous liquid phase oxidations, producing water as the sole by-product. This "green" combination represents a highly desirable solution to the environmental issue. Following these guidelines, hydrogen peroxide was chosen as …