Synthesis 2021; 53(16): 2828-2840
DOI: 10.1055/a-1490-1241
paper

Proton-Mediated Practical Synthesis of McGeachin-Type Bisaminals

Yang Chen
,
Tingting Wang
,
Hongguang Du
,
Jiaxi Xu
,
Zhanhui Yang
This work was financially supported by the Beijing Natural Science Foundation (No. 2202041 to Z.Y.) and the Fundamental Research Funds for the Central Universities (No. XK1802-6 to Z.Y. and J.X.; No. 12060093063 to Z.Y.).


Abstract

A proton-mediated practical synthesis of McGeachin-type bisaminals from 2-(alkylamino)arenecarbaldehydes and primary amines is achieved, with trifluoroacetic acid as the proton donor. The use of a proton, a smallest electrophilic activator, allows previously inviable ortho­-substituted anilines and linear and branched aliphatic amines to be viable substrates for McGeachin bisaminal synthesis. Overcoming the steric and electronic limitations provides a practical synthetic method. The applications in product derivation and pharmaceutical molecule modification are also demonstrated.

Supporting Information



Publikationsverlauf

Eingereicht: 26. März 2021

Angenommen nach Revision: 23. April 2021

Accepted Manuscript online:
23. April 2021

Artikel online veröffentlicht:
19. Mai 2021

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