Journal of Organometallic Chemistry p. 80 - 88 (2019)
Update date:2022-08-05
Topics:
Gogoi, Rajjyoti
Saikia, Rituraj
Borah, Geetika
A palladium (II) complex immobilized onto nanosilica(Pd-imine@nanoSiO2) has been developed and evaluated as a highly efficient, retrievable catalyst for carbon-carbon triple bond activation reactions between aryl halides and terminal alkynes. Nanosilica has been derived from rice husk by simple and eco-compatible methodology. The catalyst has been extensively characterized by techniques such as FT-IR, UV–vis, powder XRD, XPS, SEM-EDX, thermogravimetric analysis, BET surface area measurement. The catalyst can be reused for five consecutive runs without compromising much with the activity. Easy preparation, its long shelf life, air-stability, wide substrate scope, ‘in water’ reactions, easy separability and good recyclability make it an ideal system for Sonogashira cross-coupling reaction. Moreover, various alkyne substrates were efficiently cross-coupled with a broad range of aryl iodides and aryl bromides to afford diaryl alkynes, providing improved yields with low catalyst loading in water. This protocol is also suitable for aliphatic alkynes.
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Doi:10.1016/0022-328X(87)87104-8
(1987)Doi:10.1515/znb-1997-0110
(1997)Doi:10.1021/om960868r
(1997)Doi:10.1021/jo961140n
(1997)Doi:10.1021/om9609224
(1997)Doi:10.1248/cpb.45.402
(1997)