Carboranes copper

In another paper Zakhardin s group investigated the reaction of arenediazonium salts with carboranes in which one of the CH protons was replaced by copper(i). The... 

Copper and gold carborane complexes are discussed with the metalloboranes ( 6.5.3.4.). 

In the absence of double bonds, intramolecular insertion reactions into C-H bonds are observed (eq 8).22 Recently, intramolecular insertion into the B-H bond of a carborane has been found to occur readily.Anhyd CUSO4 has also been used effectively to promote the formation of sulfur ylides in the reactions of diazo compounds and sulfides. See also copper(I) acetylacetonate. 

New problems on explaining trends in electron affinities on the basis of radial distribution functions, the reaction between aqueous copper chloride solution and aluminum metal, assigning structural classes to simple boranes, isomers of carboranes, and semitopological diagrams for alanes... 

Bis(metfl-carborane) (67) was obtained by copper-mediated C—C coupling of monolithiated meta-carborane. Functionalization of the C—H groups of 67 with amidophosphites gave P-chiral (68) and achiral (69) bisphosphonite derivatives (Scheme 2.10). 

Copper(I)-catalyzed amination of iodobenzene with aniline in the presence of KO-t-Bu as base was described by Don and co-workers [56] (Scheme 22.12). They reported the use of the [Cu2(p-I)2(L)2] (L = l,2-bis(diphenylphosphino)-c/oi 0-carborane(12) (1)) catalyst, which showed a conversion of the amine of 58%, compared to no significant conversion without ligand 1. The conversion is in the range of the reaction of copper(I) iodide in the presence of 2,2 -dithiobis(5-nitropyridine) but lower than that of the 2,2 -bipyridine ligand [57]. It was postulated that the reaction proceeds via an insertion of the copper(I) species into the carbon-halogen bond as the initial step. 

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