Efavirenz aminoalcohol → Efavirenz

Participants

Reaction Steps

This intermediate, (2S)-2-(2-amino-5-chlorophenyl)-4-cyclopropyl-1,1,1-trifluorobut-3-yn-2-ol, as a free base, is reacted with a chloroformate derivative in basic conditions to give, after 1 to 6 hours reaction, an alkyl carbamate intermediate (reaction of the amine moiety of intermediate (II) with the chloroformate derivative) that is then cyclized to yield Efavirenz.

Provenance & Evidence