Synlett 2019; 30(10): 1125-1143
DOI: 10.1055/s-0037-1611735
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© Georg Thieme Verlag Stuttgart · New York

Controlled-Coupling of Quinone Monoacetals by New Activation Methods: Regioselective Synthesis of Phenol-Derived Compounds

Tohru Kamitanaka
a   Research Organization of Science and Technology, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga 525-8577, Japan   Email: kita@ph.ritsumei.ac.jp
,
Koji Morimoto
a   Research Organization of Science and Technology, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga 525-8577, Japan   Email: kita@ph.ritsumei.ac.jp
b   College of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga 525-8577, Japan
,
a   Research Organization of Science and Technology, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga 525-8577, Japan   Email: kita@ph.ritsumei.ac.jp
b   College of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga 525-8577, Japan
,
a   Research Organization of Science and Technology, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga 525-8577, Japan   Email: kita@ph.ritsumei.ac.jp
› Author Affiliations
This work was partially supported by Grants-in-Aid for Scientific Research (A) (JSPS KAKENHI Grant Number 24249001) from the Japan Society for the Promotion of Science (JSPS), a Grant-in-Aid for Scientific Research on Innovative Areas ‘Advanced Molecular Transformation by Organocatalysts’ (MEXT Grant Number 23105006) from The Ministry of Education, Culture, Sports, Science and Technology (MEXT), and the Ritsumeikan Global Innovation Research Organization (R-GIRO) project.
T.K. acknowledges Grant-in-Aid for Research Activity Start-up (16H07340) from JSPS. T.D. acknowledges Grant-in-Aid for Young Scientist (A) (24689002), Grant-in-Aid for Scientific Research (C) (16K08186), and Grant-in-Aid for Challenging Exploratory Research (26620036) from JSPS. K.M. also acknowledges support from the Grant-in-Aid for Young Scientists (B) (23790030 and 25860017) and Grant-in-Aid for Research Activity Start-up (21890280) from JSPS.
Further Information

Publication History

Received: 26 December 2018

Accepted after revision: 23 January 2019

Publication Date:
25 March 2019 (online)


Abstract

We have studied for a long time the reaction of quinone acetal type compounds, such as quinone monoacetals, quinone O,S-acetals, and iminoquinone monoacetals, and have reported the regioselective introduction of various nucleophiles. Quinone monoacetals show various types of reactivities toward nucleophiles due to their unique structures. In this study, we found that aromatic and alkene nucleophiles can be regioselectively introduced into the α-position of the carbonyl group on quinone monoacetals by specific activation of the acetal moiety. These reactions enabled the metal-free synthesis of highly functionalized aromatic compounds by the regioselective introduction of nucleophiles. In this account, we describe our recent studies of the coupling of quinone monoacetals.

1 Introduction

2 Regioselective Introduction of Aromatic Nucleophiles into α-Position of Carbonyl

2.1 Biaryl Synthesis by Introduction of Aromatic Nucleophiles

2.2 Synthesis of Terphenyls and Oligoarenes by Iterative Coupling

2.3 Synthesis of Phenol Cross-Coupling Products

3 [3+2] Coupling with Alkene Nucleophiles

3.1 Development of Efficient [3+2] Coupling

3.2 Improvement of Brønsted Acid Promotor

4 Synthesis of α-Aryl Carbonyl Compounds Triggered by Silyl Transfer

5 Utilization of o-Quinone Monoacetals

6 Application to Iminoquinone Monoacetals

7 Conclusion