Synthesis 2024; 56(12): 1932-1940
DOI: 10.1055/a-2241-2196
paper

Iron-Catalyzed [2+1+2+1] Annulation of Amines and N,N-Dimethyl Enaminones using N,N-Dimethylaminoethanol as a One-Carbon Synthon for the Synthesis of 1,4-Dihydropyridines

Wanqian Ma
,
Qiulin Kuang
,
Suzhen Li
,
Mengyi Guo
,
Yibo Song
,
Luoteng Cheng
,
Jianyong Yuan


Abstract

A simple and efficient method for the synthesis of 1,4-dihydropyridines from amines, N,N-dimethyl enaminone and N,N-dimethylaminoethanol in a four-component [2+1+2+1] annulation catalyzed by FeCl3 has been established, where N,N-dimethylaminoethanol was applied as a methine source. The procedure was executed smoothly, resulting in the synthesis of a wide range of 1,4-dihydropyridines with moderate to good yields. Additionally, these fluorophores exhibited good photophysical characteristics.

Supporting Information



Publication History

Received: 21 November 2023

Accepted after revision: 09 January 2024

Accepted Manuscript online:
09 January 2024

Article published online:
22 February 2024

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