Synlett 2024; 35(13): 1500-1529
DOI: 10.1055/a-2184-5115
account

Stereocontrolled Aldol-Like Reactions Involving Oxocarbenium Intermediates

Oriol Galeote
,
Stuart C. D. Kennington
,
Miguel Mellado-Hidalgo
,
Anna M. Costa
,
Pedro Romea
,
Fèlix Urpí
Financial support from the Ministerio de Ciencia e Innovación, Spain (MCIN/AEI/10.13039/501100011033/FEDER, UE) (Grant nos. PID2021-126521NB-I00 and PGC2018-094311–B-I00) is gratefully acknowledged. Doctorate studentships to O.G. (FI-AGAUR, Generalitat de Catalunya), S.C.D.K. (FI-AGAUR, Generalitat de Catalunya), and M.M.-H. (PREDOC-UB, Universitat de Barcelona) are gratefully acknowledged.


Abstract

Oxocarbenium cations are key intermediates for the stereocontrolled construction of carbon–carbon bonds. In particular, we have developed a wide range of stereoselective aldol-like processes that take advantage of the high reactivity of the oxocarbenium species arising from acetals, glycals, and orthoesters with metal enolates. This Account describes the development and optimization of such processes, together with other significant contributions, with a particular emphasis on their application to the synthesis of natural products.

1 Introduction

2 Substrate-Controlled Processes

2.1 Additions to Acyclic Acetals

2.2 Additions to Cyclic Acetals

3 Chiral-Auxiliary-Based Processes

3.1 Additions to Acyclic Acetals

3.2 Additions to Cyclic Acetals and Glycals

4 Chiral-Catalysis-Based Processes

4.1 Organocatalysis

4.2 Metal Catalysis

5 Conclusions



Publikationsverlauf

Eingereicht: 19. September 2023

Angenommen nach Revision: 29. September 2023

Accepted Manuscript online:
29. September 2023

Artikel online veröffentlicht:
17. November 2023

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