1, 4-Addition of Terminal Alkynes to Conjugated Enones in Water Using Green Catalyst Bis[( l )prolinato- N , O ]Zn—An Environmentally Benign Protocol

AbstractAn easy, low cost, and green procedure is proposed for the 1, 4-addition of terminal alkynes to conjugated enones in water as a sole medium using easily accessible Zn[(l)Proline] 2 . This protocol has advantages of high yield, mild reaction conditions, no environmental pollution and simple work up procedure.Graphical AbstractRecyclable Bis[(l)prolinato-N,O]Zn provides eminent, efficient, economical, environmentally benign protocol for the 1, 4-addition of terminal alkynes to conjugated enones in water as sole media. For the first time easily accessible, cheap catalyst was employed for such type of reaction.[IMAGE]