Sodium Carbonate → Ethyl 4-(3-methyl-5-nitro-4-oxo-1,4-dihydroquinolin-8-yl)cyclohex-3-ene-1-carboxylate

HRID 511541

Reaction equation

HRID 511541 reaction equation
Br[C:2]1[CH:3]=[CH:4][C:5]([N+:14]([O-:16])=[O:15])=[C:6]2[C:11]=1[NH:10][CH:9]=[C:8]([CH3:12])[C:7]2=[O:13].CC1(C)C(C)(C)OB([C:25]2[CH2:30][CH2:29][CH:28]([C:31]([O:33][CH2:34][CH3:35])=[O:32])[CH2:27][CH:26]=2)O1.C([O-])([O-])=O.[Na+].[Na+]>O1CCOCC1.O.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[CH3:12][C:8]1[C:7](=[O:13])[C:6]2[C:11](=[C:2]([C:25]3[CH2:30][CH2:29][CH:28]([C:31]([O:33][CH2:34][CH3:35])=[O:32])[CH2:27][CH:26]=3)[CH:3]=[CH:4][C:5]=2[N+:14]([O-:16])=[O:15])[NH:10][CH:9]=1

Participants

6

Reactant 3

HCID 10340Sodium CarbonateHCID 592787964-(4,4,5,5-Tetramethyl-(1,3,2)dioxaborolan-2-yl)cyclohex-3-ene-1-carboxylic acid ethyl esterHCID 672543158-bromo-3-methyl-5-nitroquinolin-4(1H)-one2×

Product 1

HCID 67254537Ethyl 4-(3-methyl-5-nitro-4-oxo-1,4-dihydroquinolin-8-yl)cyclohex-3-ene-1-carboxylateYield 67%

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 218864351,4-Dioxane--water (1/1)Solvent

Conditions

Temperature
100 °C

Procedure

A mixture of 8-bromo-3-methyl-5-nitroquinolin-4(1H)-one (Compound 304E, 700 mg, 2.47 mmol), ethyl 4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)cyclohex-3-enecarboxylate (1.8 g, 6.43 mmol, commercially available or can be prepared according to WO2008/099221), Pd(PPh3)4 (20 mg), and Na2CO3 (1 g, 9.43 mmol) in 1,4-dioxane/H2O (150 mL, 4:1) was evacuated and purged with N2. The reaction mixture was stirred at 100° C. for 18 h under N2. The reaction mixture was filtered and the filtrate was concentrated under reduced pressure. The material was purified by flash column chromatography to afford the desired compound (600 mg, yield: 67%). 1H NMR (DMSO-d6, 400 MHz): δ=1.22 (t, J=7.2 Hz, 3 H), 1.85 (m, 1 H), 1.96 (s, 3 H), 2.08 (m, 1 H), 2.26 (m, 1 H), 2.38-2.49 (m, 3 H), 2.78 (m, 1 H), 4.12 (q, J=7.2 Hz, 2 H), 5.84 (s, 1 H), 7.46 (d, J=8.0 Hz, 1 H), 7.58 (d, J=8.0 Hz, 1 H), 7.83 (d, J=6.0 Hz, 1 H), 10.94 (d, J=6.0 Hz, 1 H).

Workup

  1. customcommercially available or can be prepared
  2. customwas evacuated
  3. custompurged with N2
  4. filtrationThe reaction mixture was filtered
  5. concentrationthe filtrate was concentrated under reduced pressure
  6. customThe material was purified by flash column chromatography

Sources & evidence

ORD record
ord-048c8d3ef5364b72a5bd2b24ef271d78
Source dataset
uspto-grants-2015_08
Patent number
US09096624B2

Linked notes

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