Trifluoroacetic acid → HCID 131715493, compound

Participants

Reaction Steps

The protected dipeptide ester (XI) (4.8 g, 13 mmol) was dissolved in cold TFA (40 ml). After 10 minutes, the TFA was removed in vacuo and dry ether (200 ml) was added. The ether was decanted and the residue was washed with more ether (100 ml). The oily material was dried over KOH to give (XII) as a white foam that was used immediately, T.l.c. RfA3 =0.42.

Provenance & Evidence