Diskussion:Chiraphos

das Bild is falsch

Stereochemie (inversion!), reagents (Li + ROTs gibt Abfall). Hier ist besser:

-- Smokefoot 14:20, 3. Apr. 2009 (CEST)

If you find a mistake in a chemical formula, please leave a message on the article's talk page, the picture's talk page on commons or, since I created the disputed picture, on my own talk page. Please do not exchange pictures without leaving a statement either in the edit summary or on the article's talk page. The picture you inserted does not meet our minimum criteria for chemical structures, that's why your changes were reverted. If you had stated that there is a mistake in the picture, understanding your changes would have been easier. I would have expected the reaction to be a double inversion (substitution of OTos by THF (kinetically favored because of the large excess of THF) followed by a subtitution reaction with PPh₂^-), but rereading the literature shows that only single inversion takes place. The cited literature shows the in situ generation of LiPPh₂ from Li and PPh₃. Of course also LiPPh₂, NaPPh₂, KPPh₂ and so on could be used, but the reaction stated in the cited literature is the one to be shown in the picture. Further reactions can be mentioned, but a citation of the corresponding literature is necessary. --Eschenmoser 10:48, 5. Apr. 2009 (CEST)