2-[methyl-(2,2,2-trifluoroacetyl)amino]acetic acid

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Secondary aniline 4 was coupled to carboxylic acid 44 on a 3.17 mmol scale via General Procedure B to furnish 45 (2.07 g, 97%): δH (400 MHz, CDCl3) 1.35-1.44 (m, 5H, [Cy] CH2), 1.71-1.90 (m, 6H, [Cy] CH2), 3.17 (s, 3H, CH3), 3.79 (s, 2H, CH2), 4.84 (s, 2H, CH2), 4.97 (s, 2H, CH2), 5.35 (s, 2H, CH2), 6.65 (s, 1H, CH), 6.78 (dd, J=8.4 and 1.6 Hz, 1H, CH), 7.10-7.19 (m, 4H, CH), 7.29-7.43 (m, 10H, CH), 7.86 (d, J=8.4 Hz, 1H, CH); δC (100 MHz, CDCl3) 25.8, 26.6, 34.2, 44.0, 51.2, 52.6, 66.7, 70.4, 77.2, 113.9, 115.0, 117.6, 119.8, 126.8, 126.9, 127.7, 128.0, 128.3, 128.3, 128.4, 128.6, 132.9, 133.6, 135.5, 135.6, 144.6, 147.5, 157.0, 158.4, 165.1, 165.4; LRMS (ES+) calcd for [C39H39F3N2O5+Na] 695.27. found 695.36.