Bis(2-bromoethyl) ether → Methyl 2-(tert-butoxy)-2-(4-(3,4-dimethylphenyl)-2-methyl-7-(morpholinomethyl)-1-oxo-1,2-dihydroisoquinolin-3-yl)acetate

HRID 572507Notes

Reaction equation

HRID 572507 reaction equation
[NH2:1][CH2:2][C:3]1[CH:12]=[C:11]2[C:6]([C:7]([C:25]3[CH:30]=[CH:29][C:28]([CH3:31])=[C:27]([CH3:32])[CH:26]=3)=[C:8]([CH:15]([O:20][C:21]([CH3:24])([CH3:23])[CH3:22])[C:16]([O:18][CH3:19])=[O:17])[N:9]([CH3:14])[C:10]2=[O:13])=[CH:5][CH:4]=1.CCN(C(C)C)C(C)C.Br[CH2:43][CH2:44][O:45][CH2:46][CH2:47]Br>C1(C)C=CC=CC=1.CCOC(C)=O>[C:21]([O:20][CH:15]([C:8]1[N:9]([CH3:14])[C:10](=[O:13])[C:11]2[C:6]([C:7]=1[C:25]1[CH:30]=[CH:29][C:28]([CH3:31])=[C:27]([CH3:32])[CH:26]=1)=[CH:5][CH:4]=[C:3]([CH2:2][N:1]1[CH2:47][CH2:46][O:45][CH2:44][CH2:43]1)[CH:12]=2)[C:16]([O:18][CH3:19])=[O:17])([CH3:22])([CH3:23])[CH3:24]

Participants

6

Reactant 3

HCID 21521Bis(2-bromoethyl) ether2×HCID 81531Diisopropylethylamine2×HCID 68295579Methyl [7-(aminomethyl)-4-(3,4-dimethylphenyl)-2-methyl-1-oxo-1,2-dihydro-3-isoquinolinyl][(1,1-dimethylethyl)oxy]acetate

Product 1

HCID 68295788Methyl 2-(tert-butoxy)-2-(4-(3,4-dimethylphenyl)-2-methyl-7-(morpholinomethyl)-1-oxo-1,2-dihydroisoquinolin-3-yl)acetateYield 79.5%

Reagents, catalysts & solvents 2

HCID 1140TolueneSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
90 °C

Procedure

A solution of methyl 2-(7-(aminomethyl)-4-(3,4-dimethylphenyl)-2-methyl-1-oxo-1,2-dihydroisoquinolin-3-yl)-2-(tert-butoxy)acetate (17 mg, 0.039 mmol) in toluene (750 μl) was treated with DIEA (13.60 μl, 0.078 mmol) and 1-bromo-2-(2-bromoethoxy)ethane (5.87 μl, 0.047 mmol). The mixture was stirred at 90° C. for 6 hours. Additional DIEA (13.60 μl, 0.078 mmol) and 1-bromo-2-(2-bromoethoxy)ethane (5.87 μl, 0.047 mmol) were added, the reaction was stirred at 90° C. overnight. The reaction was cooled to rt, diluted with EtOAc, washed with water, brine, dried with Na2SO4, filtered, and concentrated. The residue was purified by column chromatography (0-10% MeOH/DCM) to afford methyl 2-(tert-butoxy)-2-(4-(3,4-dimethylphenyl)-2-methyl-7-(morpholinomethyl)-1-oxo-1,2-dihydroisoquinolin-3-yl)acetate (15.6 mg, 0.031 mmol, 79% yield). The methyl ester was hydrolyzed in a manner similar to that described in Example 165 Step C and purified by reverse phase HPLC to afford 2-(tert-butoxy)-2-(4-(3,4-dimethyl phenyl)-2-methyl-7-(methylsulfonamidomethyl)-1-oxo-1,2-dihydroisoquinolin-3-yl)acetic acid (14 mg, 0.027 mmol, 88% yield) as a white solid. 1H NMR (400 MHz, CHLOROFORM-d) δ ppm 8.42 (s, 1 H), 7.71-7.61 (m, 1 H), 7.24-7.33 (m, 1 H), 7.26-7.17 (m, 2 H), 7.07-6.96 (m, 1 H), 5.35 (s, 1 H), 4.40-4.22 (m, 2 H), 4.03-3.81 (m, 4 H), 3.71 (s, 3 H), 3.59-3.37 (m, 2 H), 2.92 (br. s., 2 H), 2.37 (s, 3 H), 2.32 (s, 1.5 H), 2.29 (s, 1.5 H). 1.06 (s, 4.5 H), 1.05 (s, 4.5 H); LCMS (m/z) ES+=493 (M+1).

Workup

  1. stirringthe reaction was stirred at 90° C. overnight
  2. temperatureThe reaction was cooled to rt
  3. washwashed with water, brine
  4. dry with materialdried with Na2SO4
  5. filtrationfiltered
  6. concentrationconcentrated
  7. customThe residue was purified by column chromatography (0-10% MeOH/DCM)

Sources & evidence

ORD record
ord-7e11b9a5c0604882927bb66050fb5941
Source dataset
uspto-grants-2015_05
Patent number
US09029391B2

Reaction notes

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