Title of article
Simple and efficient protocol for the synthesis of novel dihydro-1H-pyrano[2,3-c]pyrazol-6-ones via a one-pot four-component reaction
Author/Authors
Azzam، نويسنده , , Sadeq Hamood Saleh and Pasha، نويسنده , , M.A.، نويسنده ,
Issue Information
هفته نامه با شماره پیاپی سال 2012
Pages
4
From page
6834
To page
6837
Abstract
Ba(OH)2 catalyzed simple and efficient one-pot four-component reaction of Meldrums acid, ethyl acetoacetate, hydrazine hydrate, and aromatic aldehydes to give 3-methyl-4-aryl-4,5-dihydro-1H-pyrano[2,3-c]pyrazol-6-ones in refluxing water is reported. The yields are high and the reactions go to completion in 1–2 h.
Keywords
Pyranopyrazole-6-ones , Aromatic aldehydes , Meldrums acid , Hydrazine hydrate , ethyl acetoacetate , Ba(OH)2 , water
Journal title
Tetrahedron Letters
Serial Year
2012
Journal title
Tetrahedron Letters
Record number
1882978
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