Trifluoroacetic acid → HCID 178429616, compound

Participants

Reaction Steps

A suspension of t-butyl 3-methyl-7-[4-(2-trifluoroacetylaminoethyl)imidazol-2-yl]aminoceph-3-em-4-carboxylate (0.34 g.) in TFA (5 ml.) was stirred for 2 hours at ambient temperature and then evaporated to dryness. The residue was purified by precipitation from a THF solution with ether to give 3-methyl-7-[4-(2-trifluoroacetylaminoethyl)imidazol-2-yl]aminoceph-3-em-4-carboxylic acid trifluoroacetate as a cream solid (0.2 g.), m.p. 165° (decomp.), having the following n.m.r. spectrum in CH3OD: 2.14 (s, 3H); 2.82 (t, 2H); 3.5 (m, 4H); 5.14 (d, 1H); 5.38 (d, 1H); 6.7 (s, 1H).

Provenance & Evidence