(3‐Methoxy‐3‐methyl‐1‐butynyl)copper(I)

[66769-63-9] C6H9CuO (MW 160.70) InChI = 1S/C6H9O.Cu/c1-5-6(2,3)7-4;/h2-4H3; InChIKey = ILPUPLQXUIGQGL-UHFFFAOYSA-N (nontransferable ligand used in cuprate preparation for selective ligand transfer to electrophiles2) Physical Data: red solid. Solubility: sol THF; moderately sol ether (0.1 M at 0 °C); insol hexane, H2O. Preparative Methods: lithiation of 3-methoxy-3-methyl-1-butyne followed by addition of Copper(I) Iodide. Usually prepared and used in situ. Copper(I) acetylides can be stored under water, then dried in the air. Handling, Storage, and Precautions: copper(I) acetylides are reported to be explosive when dry. Prepared reagent should be used within a few days for best results. Use in a fume hood.

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