Diethyl ether is a green alternative that can be used with no decrease in yield. Because of the dangers involved in the preparation of DAST (glass etching, possibility of exothermic events), it is often purchased from a commercial source.
Diethyl ether is a greener choice that preserves yield consistency. Nevertheless, the preparation of DAST (glass etching, possibility of violent chemical reactions) poses significant risks, prompting many researchers to procure it from a commercial source.