Synthesis 2022; 54(03): 763-769
DOI: 10.1055/a-1648-7154
paper

Copper-Catalyzed Regioselective Sila-acylation and Sila-imination of Allenes Using Esters and Nitriles

Katsushi Suda
,
Yuki Matsuda
,
Tatsuya Yamaguchi
,
This work was supported by the Japan Society for the Promotion of Science (JSPS), Grants-in-Aid for Scientific Research B (KAKENHI) (Grant No. 20H02738) from MEXT, Japan.


Abstract

The sila-acylation of allenes is performed in the presence of a copper catalyst using PhMe2Si-B(pin) and esters as the silyl and acyl sources, respectively. β-Silyl-β,γ-unsaturated ketones are obtained regioselectively in good to high yields. The sila-imination of allenes is also achieved using nitriles as electrophiles. Exposure of the reaction mixture to air results in the production of cyclic silyl peroxides.

Supporting Information



Publication History

Received: 28 August 2021

Accepted after revision: 20 September 2021

Accepted Manuscript online:
20 September 2021

Article published online:
19 October 2021

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