HCID 178516313, compound → HCID 178516315, compound

Participants

Reaction Steps

6-(trifluoromethyl)-3,9,10,11-tetrahydro-8,10a-methanocyclohepta-[1,2]indeno[4,5-d][1,2,3]triazol-7(8H)-one [1.8 g, (8R,10aS): (8S,10aR) enantiomeric ratio ˜2:1] was dissolved in 1/1 ethanol/methanol (130 mL) and resolved by chiral HPLC on a 2.0×25 cm Daicel Chiralcel OJ column (4 mL injections, elution with 35% EtOH:Heptane at 7.5 mL/min, fractions monitored at 310 nm). The pure fractions containing the first enantiomer to elute (enantiomer A) were combined and concentrated to give (8R,10aS)-6-(trifluoromethyl)-3,9,10,11-tetrahydro-8,10a-methanocyclohepta[1,2]indeno[4,5-d][1,2,3]triazol-7(8H)-one as a white solid which had a negative rotation. The fractions containing the second enantiomer to elute (enantiomer B) were combined and concentrated to give(8S,10aR)-6-(trifluoromethyl)-3,9,10,11-tetrahydro-8,10a-methanocyclohepta[1,2]indeno[4,5-d][1,2,3]triazol-7(8H)- one as a solid which had a positive rotation.

Provenance & Evidence