Synthesis 2024; 56(24): 3741-3751
DOI: 10.1055/a-2369-3961
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Recent Advancements in The Chemistry of Diazo Compounds

Mild and Stereoselective Synthesis of (1E,3E)-Dienes through Silver(I)-Catalyzed β-Hydride Migration from Allylic α-Diazo Esters

Marcus M. Sá
a   MESOLab (Laboratory of Methodology and Organic Synthesis), Departamento de Química, Universidade Federal de Santa Catarina, 88040-900 Florianópolis-SC, Brazil
,
Pedro A. M. Moro
a   MESOLab (Laboratory of Methodology and Organic Synthesis), Departamento de Química, Universidade Federal de Santa Catarina, 88040-900 Florianópolis-SC, Brazil
,
Theo V. C. Russo
a   MESOLab (Laboratory of Methodology and Organic Synthesis), Departamento de Química, Universidade Federal de Santa Catarina, 88040-900 Florianópolis-SC, Brazil
,
Vinicius C. Port
b   GEEMM (Molecular Electronic Structure and Materials Group), Departamento de Química, Universidade Federal de Santa Catarina, 88040-900 Florianópolis-SC, Brazil
,
Giovanni F. Caramori
b   GEEMM (Molecular Electronic Structure and Materials Group), Departamento de Química, Universidade Federal de Santa Catarina, 88040-900 Florianópolis-SC, Brazil
› Author Affiliations
We are grateful to the Brazilian governmental agencies CAPES (Coordenação de Aperfeiçoamento de Pessoal de Nível Superior), CNPq (Conselho Nacional de Desenvolvimento Científico e Tecnológico), and FAPESC (Fundação de Amparo à Pesquisa e Inovação do Estado de Santa Catarina) for the research grants and fellowships. Support from INCT-Catálise/FAPESC/CNPq/CAPES is also gratefully acknowledged.


Abstract

A mild procedure for the diastereoselective preparation of functionalized 1,3-dienes and their synthetic versatility are described herein. The silver-catalyzed decomposition of α-diazo-γ,δ-unsaturated esters through β-hydride migration at room temperature resulted in the stereoselective formation of 12 conjugated (1E,3E)-dienes. Further synthetic post-modifications included intramolecular Heck reaction and hydrogenation, leading to a novel substituted indene and an aliphatic diester, respectively. To rationalize the observed reaction outcome, a computational investigation of the mechanisms was conducted, emphasizing the importance of factors such as metallocarbenoid stability, substituent effects, and microkinetics simulations to better understand the reaction intricacies.

Supporting Information



Publication History

Received: 18 June 2024

Accepted after revision: 18 July 2024

Accepted Manuscript online:
18 July 2024

Article published online:
13 August 2024

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