HCID 23433508, compound → HCID 23433667, compound

HRID 1939465Notes

Reaction equation

HRID 1939465 reaction equation
[N+:1]([C:4]1[CH:13]=[C:12]2[C:7]([CH2:8][CH:9]([CH3:14])[CH2:10][NH:11]2)=[CH:6][CH:5]=1)([O-])=O>C(OCC)(=O)C.[Pd]>[NH2:1][C:4]1[CH:13]=[C:12]2[C:7]([CH2:8][CH:9]([CH3:14])[CH2:10][NH:11]2)=[CH:6][CH:5]=1

Participants

4

Reactant 1

HCID 23433508HCID 23433508, compound

Product 1

HCID 23433667HCID 23433667, compoundYield 91%

Reagents, catalysts & solvents 2

HCID 23938PalladiumCatalystHCID 8857Ethyl AcetateSolvent

Procedure

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).

Workup

  1. filtrationFiltration over Celite™

Sources & evidence

ORD record
ord-e610496e25784ecf9ba45bea85ef7cac
Source dataset
uspto-grants-1997_12
Patent number
US05696127

Reaction notes

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