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Advanced Organic Chemistry by Maya Shankar Singh

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11

Pericyclic Reactions

LEARNING OBJECTIVES

By the end of this chapter you should be familiar with

  • Types and principles of pericyclic reactions.
  • What determines whether these pericyclic reactions go forwards or backwards.
  • Conservation of orbital symmetry and what conrotatory and disrotatory mean.
  • Electrocyclic reactions and rules governing them.
  • Cycloaddition reactions and rules governing them.
  • Sigmatropic reactions and rules governing them.
11.1 INTRODUCTION

Organic reactions can be classified into three major classes: polar reactions (reaction between nucleophile and electrophile), radical reactions (reaction using one electron from each of the reactants) and pericyclic reactions. A pericyclic reaction, that is, cyclic reorganization of electrons, ...

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