Trifluoroacetic acid → HCID 68705755, compound

Participants

Reaction Steps

To a solution of 1-methyl-1,6-dihydro-1,6,7-triaza-as-indacene-2,3-dicarboxylic acid 2-tert-butyl ester 3-ethyl ester C3 (0.68 mmol in DCM (10 mL), trifluoroacetic acid (1 mL) was added. The solution was stirred at rt for 2 h then the reaction mixture was evaporated to dryness affording the title compound in quantitative yield. ESI (+) MS: m/z 288 (MH+); MS (ES−) 286. 1H NMR: 1.35 (t, J=7.07, 3H), 4.18 (s, 3H), 4.33 (q, J=7.07, 2H), 7.47 (d, J=9.02, 1H), 7.91 (d, J=9.02, 1H), 8.51 (s, 1H), 13.46 (bs, 2H).

Provenance & Evidence