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Copper(I) iodide is an inorganic compound with the chemical formula Cu I. It is also known as cuprous iodide . It is useful in a variety of applications ranging from organic synthesis to cloud seeding .
Some copper proteins form oxo complexes, which also feature copper(III). [20] With tetrapeptides, purple-colored copper(III) complexes are stabilized by the deprotonated amide ligands. [21] Complexes of copper(III) are also found as intermediates in reactions of organocopper compounds. [22] For example, in the Kharasch–Sosnovsky reaction.
Phenylcopper was the first known organocopper compound and was first prepared in 1923 from phenylmagnesium iodide and copper(I) iodide and in 1936 by Henry Gilman by transmetallation of phenylmagnesium iodide with copper(I) chloride. Phenylcopper can be obtained by reacting phenyl lithium with copper(I) bromide in diethyl ether. [3]
Copper is a chemical element with the symbol Cu (from Latin: cuprum) and the atomic number of 29. It is easily recognisable, due to its distinct red-orange color . Copper also has a range of different organic and inorganic salts , having varying oxidation states ranging from (0,I) to (III).
Organocopper chemistry is the study of the physical properties, reactions, and synthesis of organocopper compounds, which are organometallic compounds containing a carbon to copper chemical bond. [ 1 ] [ 2 ] [ 3 ] They are reagents in organic chemistry .
In this protocol, iodide ion is generated by the following slow reaction between the iodate and bisulfite: IO − 3 + 3 HSO − 3 → I − + 3 HSO − 4. This first step is the rate determining step. Next, the iodate in excess will oxidize the iodide generated above to form iodine: IO − 3 + 5 I − + 6 H + → 3 I 2 + 3 H 2 O
The addition of Grignard reagents to alkynes is facilitated by a catalytic amount of copper halide. Transmetalation to copper and carbocupration are followed by transmetalation of the product alkene back to magnesium. The addition is syn unless a coordinating group is nearby in the substrate, in which case the addition becomes anti and yields ...
Lithium dimethylcopper (CH 3) 2 CuLi can be prepared by adding copper(I) iodide to methyllithium in tetrahydrofuran at −78 °C. In the reaction depicted below, [4] the Gilman reagent is a methylating reagent reacting with an alkyne in a conjugate addition, and the ester group forms a cyclic enone. Scheme 1. Example Gilman reagent reaction