HCID 23433496, compound → HCID 23433554, compound

Participants

Reaction Steps

A solution of 7-nitro-1,2,3,4-tetrahydro-3,3-dimethylquinoline (39 mg, 0.187 mmol) in ethyl acetate (2 mL) was hydrogenated under an atmosphere of hydrogen with 10% Pd/C (4 mg) at rt for 2 h. Filtration over Celite™ afforded 30 mg (91%) of 7-amino-1,2,3,4-tetrahydro-3,3-dimethylquinoline (structure 72A of Scheme LII, where R1-2 =R5 =H, R3-4 =methyl) that was used without further purification in the next step. Compound 437 was prepared by General Method 13 (EXAMPLE 147) from 7-amino-1,2,3,4-tetrahydro-3,3-dimethylquinoline (30 mg, 0.17 mmol), ZnCl2 (34 mg, 025 mmol) and ethyl 4,4,4,-trifluoroacetoacetate (25 mL, 0.17 mol) to afford 13 mg (26%) of Compound 437 as a yellow solid. Data for Compound 437: 1H NMR (400 MHz, DMSO-d6) 11.71 (bs, 1 H), 7.11 (s, 1 H), 7.01 (s, 1 H), 6.40 (s, 1 H), 6.37 (s, 1 H), 2.89 (s, 2 H), 2.51 (s, 2 H), 0.93 (s, 6 H).

Provenance & Evidence