Lewis acid-mediated alkylations of N,O-acetals and applications to the total syntheses of alkaloids

Abstract

LIST OF ABBREVIATIONS CHAPTER 1: INTRODUCTION 1.1. Alkylations of monocyclic iminium ions to 2,6-cisdisubstituted-piperidine rings. 1.1.1. Alkylations of monocyclic N-iminium ions arising from oxazolopiperidone synthon. 1.1.2. Alkylations of monocyclic N-acyliminium ions arising from α-alkyloxyl carbamates. 1.1.3. Alkylations of monocyclic N-acyliminium ions arising from imino glycal. 1.1.4. Alkylations of monocyclic N-sulfonyliminium ions. 1.2. Alkylations of monocyclic iminium ions to 2,6-transdisubstituted-piperidine rings. 1.3. Alkylations of bicyclic iminium ions to 2,6-trans-disubstitutedpiperidine rings.