Microwave-assisted one-pot diboration/Suzuki cross-couplings. A rapid route to tetrasubstituted alkenes
H Prokopcová, J Ramírez, E Fernández, CO Kappe
Index: Prokopcova, Hana; Ramirez, Jesus; Fernandez, Elena; Kappe, C. Oliver Tetrahedron Letters, 2008 , vol. 49, # 33 p. 4831 - 4835
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Citation Number: 28
Abstract
Internal and terminal alkynes undergo rapid platinum (0)-catalyzed diboration with bis (pinacolato) diboron in dioxane to yield cis-1, 2-bis (boryl) alkenes under sealed vessel microwave conditions. Subsequent addition of aryl bromides, base and a palladium catalyst to the reaction vial followed by resubjection to microwave conditions provides tetrasubstituted ethylenes in high yields via Suzuki cross-coupling of the boron ...
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