LIKOR reagent

Another mixed aggregate complex consisting of Bu°Li and r-butoxide was reported in 1990 as the tetramer (45). Hiis complex was first isolated by Lochmann and has been shown to be tetrameric and dimeric in benzene and THF, respectively, by cryoscopic measurements, and it has also been studied by rapid injection NMR techniques. Hiis species has received much attention because it is related to the synthetically useful superbasic or LiKOR reagents prepared by mixing alkali metal alkoxides with lithium alkyls or lithium amides. ... 

If the required reagent RLi cannot be obtained by lithiation of RH with, say, butyllith-ium, the metallation can sometimes be achieved by using a mixture of butyllithium and potassium t-butoxide (Schlosser s reagent or the LIKOR reagent) (e.g. equations 4-16 22 and 4-1713). The precise nature of the reagent is uncertain, but it is probably best represented as the organopotassium reagent, BuK. 

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See also in sourсe #XX -- [ ]

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