A New Facile Synthesis of 4-Oxo-1,4-dihydrocinnolines

DOI: 10.1055/s-1987-27921

Source and publish data:

Synthesis p. 288 - 290 (1987)

Update date:2022-09-26

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Authors:

Baldoli, Clara

Licandro, Emanuela

Maiorana, Stefano

Menta, Ernesto

Papagni, Antonio

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Article abstract of DOI:10.1055/s-1987-27921

2-(2-Aminoaryl)-2-oxo-triphenylphosphoniumethylides 2a-d, readily available by standard procedures, are converted into 4-oxo-1,4-dihydrocinnolines 7a-d by treatment with nitrous acid and subsequent basic hydrolysis of the intermediate phosphoranes 6a-d.

Full text of DOI:10.1055/s-1987-27921

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Product name:3-(3-Methyl-2-nitro-phenyl)-3-oxo-2-(triphenyl-λ⁵-phosphanylidene)-propionic acid tert-butyl ester

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