(5-chloro-2,4-difluorophenyl)methanamine

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of methyl dimethoxyacetate (1.45 g, 10.7 mmol) and 5-chloro-2,4-difluorobenzylamine (1.78 g, 10.0 mmol) in a sealed tube was heated at 80° C. for 20 h. After that time, the mixture was diluted with EtOAc (20 ml), washed with HCl (2 N, 10 ml), saturated Na2CO3 (10 ml), H2O (10 ml) and brine (10 ml), and dried over MgSO4. After concentrated in vacuo, the title compound was obtained as a brown oil. 1H NMR (400 MHz, CDCl3): δ=3.41 (s, 6H), 4.46 (d, J=6.4 Hz, 2H), 4.74 (s, 1H), 6.92 (t, J=8.8 Hz, 1H), 6.93 (brs, 1H), 7.41 (t, J=8.0 Hz, 1H). MS(ES+): m/z=280.03/282.01 (95/57) [MH+]. HPLC: tR=3.02 min (polar—5 min, ZQ3). washed with HCl (2 N, 10 ml), saturated Na2CO3 (10 ml), H2O (10 ml) and brine (10 ml) dried over MgSO4 After concentrated in vacuo