the reaction of ethyl 2-oxo-2h-chromene-3-carboxylate with hydrazine hydrate
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ID: 138382
2013
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Abstract
Although salicylaldehyde azine (3) was reported in 1985 as the single product of the reaction of ethyl 2-oxo-2H-chromene-3-carboxylate (1) with hydrazine hydrate, we identified another main reaction product, besides 3, which was identified as malono-hydrazide (4). In the last two decades, however, some articles have claimed that this reaction afforded exclusively hydrazide 2 and they have reported the use of this hydrazide 2 as a precursor in the syntheses of several heterocyclic compounds and hydrazones 6. We reported herein a study of the formation of 2 and a facile route for the synthesis of the target compounds N'-arylidene-2-oxo-2H-chromene-3-carbohydrazides 6a–f.
| Reference Key |
alanazi2013moleculesthe
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|---|---|
| Authors | ;Amer M. Alanazi;Mohamed I. Attia;Tilal Elsaman;Hatem A. Abdel-Aziz |
| Journal | Journal of ethnopharmacology |
| Year | 2013 |
| DOI |
10.3390/molecules18022084
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| URL | |
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