One-pot synthesis of pyrazole-5-carboxylates by cyclization of hydrazone 1,4-dianions with diethyl oxalate
作者:Tuan Thanh Dang、Tung Thanh Dang、Peter Langer
DOI:10.1016/j.tetlet.2007.03.093
日期:2007.5
The cyclization of hydrazone dianions with diethyl oxalate afforded pyrazole-5-carboxylates.
用草酸二乙酯对的二价阴离子进行环化,得到吡唑-5-羧酸酯。
Synthesis of pyrazole-3-carboxylates and pyrazole-1,5-dicarboxylates by one-pot cyclization of hydrazone dianions with diethyl oxalate
作者:Tung T. Dang、Tuan T. Dang、Christine Fischer、Helmar Görls、Peter Langer
DOI:10.1016/j.tet.2007.12.024
日期:2008.2
The one-pot cyclization of hydrazone dianions with diethyl oxalate allows a convenient synthesis of pyrazole-3-carboxylates and pyrazole-1,5-dicarboxylates.