Introducing deep eutectic solvents as biorenewable media for Au(i)-catalysed cycloisomerisation of γ-alkynoic acids: an unprecedented catalytic system

Literature Information

Publication Date 2014-09-02
DOI 10.1039/C4CC05904B
Impact Factor 6.222
Authors

María J. Rodríguez-Álvarez, Cristian Vidal, Josefina Díez, Joaquín García-Álvarez


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Abstract

Cycloisomerisation of γ-alkynoic acids into cyclic enol-lactones was conveniently performed, for the first time, in the eutectic mixture 1ChCl/2Urea under standard bench experimental conditions (at room temperature, under air and in the absence of co-catalysts) by using a new iminophosphorane–Au(I) complex as the catalyst. Furthermore, the catalytic system could be recycled up to four runs.

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