NDLI: Synthesis of 2-Amino-4-(3-amino-5-hydroxy-4H-pyrazol-4-ylidene)-4H-chromene-3-carbonitriles

Content Provider	Scilit
Author	Pore, Dattaprasad M. Mane, Mansing M.
Copyright Year	2016
Description	A simple and efficient protocol was developed for the synthesis of 2-amino-4-(3-amino-5-hydroxy-4H-pyrazol-4-ylidene)-4H-chromene-3-carbonitriles by the potassium phosphate-catalyzed reaction of salicylaldehydes, malononitrile, and 2-cyanoacetohydrazide in ethanol. The method offers advantages such as a simple workup procedure and good yields. When the method was extended to two equivalents of 2-cyanoacetohydrazide instead of malononitrile, the unexpected formation of a salicylaldehyde azine was observed, leading to a novel route for the synthesis of salicylaldehyde azines.
Related Links	http://www.thieme-connect.de/products/ejournals/pdf/10.1055/s-0035-1561952.pdf
Ending Page	1724
Page Count	5
Starting Page	1720
ISSN	09365214
e-ISSN	14372096
DOI	10.1055/s-0035-1561952
Journal	Synlett
Issue Number	11
Volume Number	27
Language	English
Publisher	Georg Thieme Verlag KG
Publisher Date	2016-04-05
Access Restriction	Open
Subject Keyword	Journal: Synlett Organic Chemistry Multicomponent Reactions
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry

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Synthesis of 2-Amino-4-(3-amino-5-hydroxy-4H-pyrazol-4-ylidene)-4H-chromene-3-carbonitriles