Silver acetylides have been prepared and used in Pd-catalyzed coupling reactions. Enynes have thus been obtained in good yields. This work demonstrates that organosilver compounds could enter the Pd catalytic cycle; it also supports the role of silver acetylides as intermediates in the new Pd/Ag-catalyzed coupling reaction.
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Article Synopsis
- Researchers have successfully isolated square-planar organosilver(III) compounds [PPh][trans-(CF)AgX] with X being Cl and Br, characterized using single-crystal X-ray diffraction.
- The compounds 1a and 2a are identified as kinetically favored stereoisomers based on stability calculations and can associate with an additional ligand to form rare five-coordinate silver species.
- Compound [PPh][(CF)AgBr] has been discovered as the first organosilver derivative showing trigonal symmetry and trigonal bipyramidal geometry, along with an inverted ligand field.
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