A Unique Approach to Catalyst-Free, One-Pot Synthesis of Spirooxindole-Pyrazolines
作者:Abdolali Alizadeh、Nasrin Zohreh
DOI:10.1055/s-0031-1290322
日期:2012.2
A pseudo-five-component synthesis of spirooxindole-pyrazolines via a one-pot and catalyst-free reaction under mild conditions is reported. The 1,1-bishydrazino-2-nitroethylene intermediate generated in situ from the addition of aqueous hydrazine to 1,1-bis(methylthio)-2-nitroethylene is trapped by two equivalents of isatin derivatives to obtain the title compounds. spirooxindole - isatin - spiropyrazole