HCID 23433508, compound → HCID 23433667, compound

Participants

Reaction Steps

A solution of 7-nitro-1,2,3,4-tetrahydro-3-methylquinoline (8.2 mg, 0.042 mmol) in ethyl acetate (1 mL) was hydrogenated under an atmosphere of hydrogen with 10% Pd/C (4 mg) at rt for 2 h. Filtration over Celite™ afforded 6.2 mg (89%) of 7-amino-1,2,3,4-tetrahydro-3-methylquinoline (structure 61A of Scheme XLVIII, where R1-2═R4=H, R3=methyl) that was used without further purification for the next step. Compound 436 was prepared by General Method 13 (EXAMPLE 147) from 7-amino-1,2,3,4-tetrahydro-3-methylquinoline (6.2 mg, 0.038 mmol), ZnCl2 (8.0 mg, 0.057 mmol) and ethyl 4,4,4-trifluoroacetoacetate (5.5 mL, 0.038 mol) to afford 5.8 mg (54%) of Compound 436 as a yellow solid. Data for Compound 436: 1H NMR (400 MHz, DMSO-d6) 11.80 (bs, 1H), 7.11 (s, 1H), 6.95 (s, 1H), 6.37 (s, 2H), 3.26 (m, 1H), 2.83 (m, 2H), 2.51 (dd, J=15.7, 10.3, 1H), 1.88 (s, 1H), 0.97 (d, J=6.6, 3H).

Provenance & Evidence