Ethanol, 1-ethoxy-2,2,2-trifluoro- → HCID 86586507, compound

Participants

Reaction Steps

This compound was prepared according to General Method 5 (EXAMPLE 2) from (3R)-3-ethyl-3,4-dihydro-8-isopropoxy-10-(trifluoromethyl)-2H-[1,4]oxazino[2,3-f]quinoline (0.008 g, 0.024 mmol), NaCNBH3 (0.007 g, 0.118 mmol) and trifluoroacetaldehyde ethyl hemiacetal (0.028 mL, 0.235 mmol) in TFA (0.8 mL) to afford 0.017 g of (3R)-3-ethyl-3,4-dihydro-8-isopropoxy-4-(2,2,2-trifluoroethyl)-10-(trifluoromethyl)-2H-[1,4]oxazino[2,3-f]quinoline, a brown-red solid. This material (0.017 g) was carried on according to General Method 4 (EXAMPLE 1) by treatment with conc. HCl (0.3 mL) in AcOH (0.6 mL) and heated at 95° C. for 2 h to afford 0.006 g (67% for the 2 steps) of Compound 110, a yellow solid. Rf0.4 (9:1 CH2Cl2;MeOH); 1H NMR (400 MHz, CDCl3) δ 12.47 (broad s, 1H), 7.15 (s, 1H), 7.14 (d, 1H, J=8.9), 7.02 (d, 1H, J=8.9), 4.38 (d, 1H, J=10.9), 3.98 (dd, 1H, J=10.8, 2.4) 3.93–3.65 (m, 2H), 3.27–3.22 (m, 1H), 1.68–1.51 (m, 2H), 0.98 (t, 3H, J=7.5).

Provenance & Evidence