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Review

The Castagnoli–Cushman Reaction

1
Laboratory of Bioorganic Chemistry & Membrane Biophysics (L.O.B.O.), Departamento de Química Orgánica e Inorgánica, Facultad de Veterinaria, Universidad de Extremadura, 10003 Cáceres, Spain
2
Departamento de Didáctica de las Ciencias Experimentales y las Matemáticas, Facultad de Formación de Profesorado, Universidad de Extremadura, 10003 Cáceres, Spain
*
Authors to whom correspondence should be addressed.
Molecules 2023, 28(6), 2654; https://doi.org/10.3390/molecules28062654
Submission received: 1 February 2023 / Revised: 11 March 2023 / Accepted: 12 March 2023 / Published: 15 March 2023
(This article belongs to the Special Issue New Approach in Multicomponent Reactions II)

Abstract

Since the first reports of the reaction of imines and cyclic anhydrides by Castagnoli and Cushman, this procedure has been applied to the synthesis of a variety of lactams, some of them with important synthetic or biological interest. The scope of the reaction has been extended to the use of various Schiff bases and anhydrides as well as to different types of precursors for these reagents. In recent years, important advances have been made in understanding the mechanism of the reaction, which has historically been quite controversial. This has helped to develop reaction conditions that lead to pure diastereomers and even homochiral products. In addition, these mechanistic studies have also led to the development of new multicomponent versions of the Castagnoli–Cushman reaction that allow products with more diverse and complex molecular structures to be easily obtained.
Keywords: multicomponent reactions; anhydrides; Schiff bases; lactones; Perkin condensation multicomponent reactions; anhydrides; Schiff bases; lactones; Perkin condensation

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MDPI and ACS Style

Ramiro, J.L.; Martínez-Caballero, S.; Neo, A.G.; Díaz, J.; Marcos, C.F. The Castagnoli–Cushman Reaction. Molecules 2023, 28, 2654. https://doi.org/10.3390/molecules28062654

AMA Style

Ramiro JL, Martínez-Caballero S, Neo AG, Díaz J, Marcos CF. The Castagnoli–Cushman Reaction. Molecules. 2023; 28(6):2654. https://doi.org/10.3390/molecules28062654

Chicago/Turabian Style

Ramiro, José Luis, Sonia Martínez-Caballero, Ana G. Neo, Jesús Díaz, and Carlos F. Marcos. 2023. "The Castagnoli–Cushman Reaction" Molecules 28, no. 6: 2654. https://doi.org/10.3390/molecules28062654

APA Style

Ramiro, J. L., Martínez-Caballero, S., Neo, A. G., Díaz, J., & Marcos, C. F. (2023). The Castagnoli–Cushman Reaction. Molecules, 28(6), 2654. https://doi.org/10.3390/molecules28062654

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