Trifluoroacetic acid → {1-[4-(3-Chloro-4-hydroxy-phenylamino)-pyrrolo[2,1-f][1,2,4]triazin-5-ylmethyl]-piperidin-4-yl}-carbamic acid, tert-butyl ester

Participants

Reaction Steps

Compound 21A (2.5 g) was prepared from 1E (2.5 g, 7.2 mmol), 4-amino-2-chlorophenol (1.03 g, 7.2 mmol) and piperidine-4-yl-carbamic acid tert-butyl ester (1.44 g, 7.2 mmol) in acetonitrile by a route analogous to that used in Method Two for the preparation of 1F. Analytical HPLC retention time=2.436 min. (Chromolith Speed ROD column 4.6×50 mm, 10–90% aqueous methanol over 4 minutes containing 0.2% trifluoroacetic acid, 4 mL/min, monitoring at 254 nm) and a LC/MS M++1=473+.

Provenance & Evidence