8 Tesi di dottorato

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8.1 Tesi di dottorato 316

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Developing sustainable strategies for the construction of heterocycles and cyano-functionalization

This thesis presents the development of novel synthetic methods for the preparation of various nitrogen-containing heterocycles and polyheterocycles, utilizing greener and more sustainable methodologies. It also explores new electrochemical cyanation protocols that employ safer cyanide sources and/or milder reaction conditions. The Introduction emphasizes the significance of heterocyclic compounds in everyday chemistry, briefly discussing their applications in pharmaceuticals and indus...

New designs in organocatalysis to unlock novel catalytic systems and complex chemical spaces

In Chapter 1, a general introduction to catalysis and its branches that will be encountered in this manuscript has been given. In Chapter 2, an application of a novel class of aminocatalysts for the asymmetric Michael addition of masked acetaldehyde as dimethyl acetal to β-nitrostyrenes to produce key intermediates for the synthesis of a class of APIs (Active Pharmaceutical Ingredients) will be shown. These catalysts are specifically designed to work in water acting like micelles, thus avoidi...

Legendrian cycles and Alexandrov sphere theorems for W^{2,n}-hypersurfaces

In this thesis, we prove that the proximal unit normal bundle of the graph of a W^{2,n}-function in n-variables carries a natural structure of Legendrian cycle. We then generalize Alexandrov's sphere theorems for higher-order mean curvature functions to hypersurfaces in \mathbb{R}^{n+1} which are locally graphs of arbitrary W^{2,n}-functions, under a general degenerate ellipticity condition. The proof relies on extending the Montiel-Ros argument to this class of hypersurfaces and on the exis...

The Stochastic Compressible Navier-Stokes-Korteweg system: The one-dimensional case

The thesis concerns the mathematical theory of the Navier-Stokes-Korteweg equations for capillary fluids. More precisely, we focus on the study of local and global well-posedness problems for the one-dimensional stochastic Quantum-Navier-Stokes equations, which fall into the class of the Navier-Stokes-Korteweg equations, driven by random initial data and stochastic forcing term. The main results achieved in the thesis concern the local and global existence of strong and weak solutions of the ...

Advanced Modeling of Large-Scale Electromagnetic Systems with Application to Reconfigurable Intelligent Surfaces

The rapid evolution of wireless communication technologies, particularly with the advent of sixth-generation (6G) systems, has brought significant attention to optimizing electromagnetic (EM) wave propagation environments. A central focus in this field is the development of Reconfigurable Intelligent Surfaces (RISs), which are poised to play a transformative role in enabling flexible, adaptive, and efficient wireless communication systems. This doctoral thesis aims to consolidate recent advan...

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