Halide metathesis

Subsequent halide metathesis reactions of MX (MX= KBr, LiBr, KI and Nal) with [Au(QF5)2Cl(PPh3)] gave only decomposition products [163], although the corre-... 

See Sodium azide See METAL NON-METALLIDES METAL HALIDES METATHESIS REACTIONS... 

A practical method for preparation of fluorinated alkenyl copper reagents has been recently developed from cuprous halides metathesis of the corresponding zinc or cadmium reagents [180]. These copper reagents exhibit excellent stability at room temperature and undergo a variety of coupling reactions with methyl, allyl, vinyl, aryl and acid halides [180] (Scheme 63). More recently, preparation of cyclic perfluoroalkenyl copper reagents has been reported by the same route [156-158]. 

Boncella et al. reported the synthesis of the base-free adduct, [Ba[N (SiMe3)2]2] v, by a halide metathesis reaction between anhydrous BaCl2 and 2 equivalents of NaN(SiMe3)2 in diethyl ether according to Eq. (5).58... 

The reaction is driven to completion by evolution of C02(g). For M = Sr, a halide metathesis reaction between Tl(C5(C02Me)5) and SrCl2 6H20 in methanol yielded Sr(C5(C02Me)5)2 3H,0.98... 

The main method of preparation of the alkaline-earth poly(pyrazolyl) borates is by halide metathesis. Belderrain et al. have reported the synthesis of the Ca, Sr, and Ba poly(pyrazolyl)borates MTp by reaction of the metal iodides, MI2, with KTp (Tp = HB(3,5-Me2pz)3) in THF, similar to the method described for the metallocene compounds.111... 

A series of very volatile alkaline-earth compounds with pendent ether groups, [M(OC-/-Bu(CH2OR)2)2]2 (M = Ca, Sr, Ba R = i-Pr or Et), have been synthesized by the halide metathesis and metal/ammonia methods as well as by reaction between the metal amides M(N(SiMe3)2)2(THF) and the alcohols HOC-t-Bu(CH2OR)2.48 Alcoholysis of metal amides has... 

Halide metathesis reactions such as that in equation (2) are commonly used as a route to bulky allyl metal complexes. 

Examples of mono-Cp alkyltitanium derivatives can also be found in Section 4.05.3.1.3.(iii), derived by halide metathesis from the corresponding chloro complexes. 

Halide metathesis with noncoordinating anions in the presence of olefins was attempted as a synthetic route to methyl olefin complexes. While the observed product was identified at low temperatures, the product was not isolated. In the case of methyl acrylate, the reaction results in the formation of a chelate complex which is isolated as the salt of a noncoordinating anion, as shown in eq 4. This chelate... 

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