A simple and efficient one-pot synthesis of biologically interesting spirooxindole
derivatives bearing hexahydroquinoline skeleton was accomplished by EDDA-catalyzed,
three-component reactions between isatins, malononitrile, and enaminones in good yields.
The value of this methodology lies in its inexpensive and nontoxic organocatalyst,
mild reaction conditions, and ease of handling.
Key words
multicomponent reaction - spirooxindoles - enaminone - hexahydroquinolines - ethylenediamine
diacetate