Pyridine → Hexamethyldisiloxane

Participants

Reaction Steps

Working up of the HF/pyridine reaction solution takes place suitably with a suspension of excess finely powdered CaCO3 in ice water with vigorous stirring and filtration of the resultant calcium fluoride. Further, excess hexamethyldisiloxane can be added to the crude reaction mixture with vigorous stirring, so that the phases are at least somewhat mixed, and the volatile trimethylsilyl fluoride (boiling point 17° C.) and water format temperatures between -20° C. and 24° C. The trimethylsilyl fluoride can be cleaved in a receiver with alkaline solution to form alkali fluorides and hexamethyldisiloxane. The working up with hexamethyldisiloxane is particularly suitable for the reaction of the 5'-phosphates.

Provenance & Evidence