Chiral triorganotin halides

It was recognized long ago that the tin center in triorganotin halides is configurationally unstable, which makes the separation of chiral triorganotin halides into its enantiomers impossible [see Ref. (123) and references cited therein]. 

The reaction of configurationally unstable triorganotin halides with the chiral reducing agent introduced by Vigneron and Jacquet45H-Al(0-3,5-Me2Ph)2(0-... 

The reaction between triorganotin hydrides and organic halides is known since 1957 68). Analogous reactions have been described for chiral triorganosilicon69) and -germanium 70) hydrides, which are stereoselective. It is well known that they proceed via the triorganometal radical, which can also be formed photochemically from metallated ketones 71). 

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