Synthesis 2020; 52(18): 2600-2612
DOI: 10.1055/s-0040-1707855
short review
© Georg Thieme Verlag Stuttgart · New York

C–H Functionalization Strategies in the Naphthalene Series: Site Selections and Functional Diversity

,
Damien Prim
Université Paris-Saclay, UVSQ, CNRS, Institut Lavoisier de Versailles, 78035, Versailles, France   Email: damien.prim@uvsq.fr
› Author Affiliations
The authors thank the Ministère de l’Enseignement Supérieur et de la Recherche (French Ministry of Superior Education) for a Ph.D. fellowship (B.L.) and the Agence Nationale de la Recherche (French National Research Agency) (Grant. No CHARMMMAT ANR-11-LABX-0039). Université de Versailles Saint-Quentin, Université Paris-Saclay and the Centre National de la Recherche Scientifique (CNRS) are gratefully acknowledged for their financial support.
Further Information

Publication History

Received: 06 April 2020

Accepted after revision: 06 May 2020

Publication Date:
17 June 2020 (online)


Abstract

Naphthalene is certainly not a common arene. In contrast to benzene, the bicyclic feature of naphthalene offers multiple differentiable positions and thus a broad diversity of substitution patterns. Naphthalene is a central building block for the construction of elaborated polycyclic architectures with applications in broad domains such as life and materials sciences. As a result, C–H functionalization strategies specially designed for naphthalene substrates have become essential to install valuable substituents on one or both rings towards polysubstituted naphthalenes. This short review provides a focus on uncommon substitution patterns; however, classical ortho C–H activation is not covered.

1 Introduction

2 C–H Functionalization Using a Directing Group Located at Position 1

2.1 Functionalization on the Ring Bearing the DG: 1,3-Substitution Pattern

2.2 Functionalization on the Ring Bearing the DG: 1,4-Substitution Pattern

2.3 Functionalization on the Neighboring Ring: 1,6-, 1,7- and 1,8-Substitution Patterns

3 C–H Functionalization Using a Directing Group Located at Position 2

3.1 Functionalization on the Ring Bearing the DG: 2,4- and 2,1-Substitution Patterns

3.2 Miscellaneous Substitution Patterns

4 Bis C–H Functionalization

4.1 Symmetrical Bisfunctionalization: 1,2,8-Substitution Pattern

4.2 Symmetrical Bisfunctionalization: 2,3,1-Substitution Pattern

4.2 Unsymmetrical Bisfunctionalization: 2,3,1-Substitution Pattern

4.3 Symmetrical Bisfunctionalization: 2,4,8-Substitution Pattern

5 Conclusion and Outlook