THIUM CHLORIDE

On the other hand, for more easily ionizable electrophiles, like ethyl chloroformate or benzoyl chloride, the first reaction stage is ionization with formation of li/thium chloride and a carbocation. The latter then reacts with the atom of highest electron density in the ambident anion, namely, with the nitrogen atom. A similar use of aldimines for the synthesis of a,/ -unsaturated aldehydes was reported by Corey and coworkers37 and by Nagata and coworkers38. 

Dagegen ist 4,4 -Bis-[hydroxy-phenyl-phosphoryl]-biphenyl aus 4,4 -Dibrom-biphenyl mit zwei Molen Benzolphosphonsaure-chlorid-dimethylamid in Hexan/THF mit Butylli-thium als Metallierungsmittel in 30-40%iger Ausbeute76 zuganglich die besten Ausbeuten werden bei Temperaturen unter -65° erhalten ... 

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