Hydrochloric Acid → HCID 69320268, compound

HRID 1350142Notes

Reaction equation

HRID 1350142 reaction equation
[CH:1]([O:4][C:5]1[CH:14]=[C:13]([C:15]([F:18])([F:17])[F:16])[C:12]2[C:7](=[CH:8][CH:9]=[C:10]3[NH:22][C@H:21]([CH3:23])[CH2:20][O:19][C:11]3=2)[N:6]=1)([CH3:3])[CH3:2].C([O-])([O-])=O.[K+].[K+].[CH2:30](Br)[CH:31]=[CH2:32].Cl>CN(C=O)C.O>[CH2:32]([N:22]1[C:10]2[C:11](=[C:12]3[C:7](=[CH:8][CH:9]=2)[N:6]=[C:5]([O:4][CH:1]([CH3:3])[CH3:2])[CH:14]=[C:13]3[C:15]([F:18])([F:17])[F:16])[O:19][CH2:20][C@H:21]1[CH3:23])[CH:31]=[CH2:30]

Participants

7

Reactant 4

HCID 313Hydrochloric AcidHCID 7841Allyl bromideHCID 11430Potassium CarbonateHCID 69316792HCID 69316792, compound

Product 1

HCID 69320268HCID 69320268, compoundYield 75%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Conditions

Temperature
50 °C

Procedure

To a suspension of (R)-3,4-dihydro-8-isopropoxy-3-methyl-10-(trifluoromethyl)-2H-[1,4]oxazino[2,3-f]quinoline (13 mg, 0.04 mimol) and K2CO3 (28 mg, 0.2 mmol, 5 eq) in 1 ml DMF (0.04 M) was added allylbromide (0.03 mL, 0.4 mmol, 10 eq). The reaction was heated to 50° C. and allowed to stir for 12 h, whereupon the reaction was poured into 10 mL water and neutralized with 1N HCl. The aqueous layer was extracted with EtOAc (2 ×40 mL/mmol) and the combined organic layers were washed with brine, dried over Na2SO4, filtered, concentrated to afford 10 mg (75%) of (R)-4-allyl-3,4-dihydro-8-isopropoxy-3-methyl-10-(trifluoromethyl)-2H-[1,4]oxazino[2,3-f]quinoline. This material (10 mg, 0.03 mmol) was carried on directly according to General Method 4 (EXAMPLE 1) by treatment with 2 mL concentrated HCl (001.M) and heated at 50° C. for 6 h to afford 6 mg (67%) of Compound 106 after silica gel column chromatography (gradient 3:1 hexanes:EtOAc to 1:1 hexanes:EtOAc, gradient elution) 1H NMR (500 MHz, CDCl3) δ 11.89 (bs, 1H), 7.11 (s, 1H), 7.00 (d, J=8.8, 1H), 6.93 (d, J=8.8, 1H), 5.86 (m, 1H), 5.24 (m, 2H), 4.10 (m, 2H), 3.90 (m, 2H), 3.55 (m, 1H), 1.22 (d, J=6.8, 3H).

Workup

  1. extractionThe aqueous layer was extracted with EtOAc (2 ×40 mL/mmol)
  2. washthe combined organic layers were washed with brine
  3. dry with materialdried over Na2SO4
  4. filtrationfiltered
  5. concentrationconcentrated

Sources & evidence

ORD record
ord-f7a6d84ce8c84346823281efc775fceb
Source dataset
uspto-grants-2007_05
Patent number
US07214690B2

Reaction notes

Loading…