Triethylamine → methyl 2-(tert-butoxy)-2-(4-(3,4-dimethylphenyl)-7-(((N,N-dimethylsulfamoyl)amino)methyl)-2-methyl-1-oxo-1,2-dihydroisoquinolin-3-yl)acetate

HRID 572512Notes

Reaction equation

HRID 572512 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(CC)CC.[CH3:40][N:41]([CH3:46])[S:42](Cl)(=[O:44])=[O:43]>ClCCl>[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][NH:1][S:42](=[O:44])(=[O:43])[N:41]([CH3:46])[CH3:40])[CH:12]=2)[C:16]([O:18][CH3:19])=[O:17])([CH3:22])([CH3:23])[CH3:24]

Participants

5

Reactant 3

HCID 8471Triethylamine2×HCID 83372Dimethylsulphamoyl chloride2×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 68295860methyl 2-(tert-butoxy)-2-(4-(3,4-dimethylphenyl)-7-(((N,N-dimethylsulfamoyl)amino)methyl)-2-methyl-1-oxo-1,2-dihydroisoquinolin-3-yl)acetateYield 73.7%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

An ice cold solution of methyl 2-(7-(aminomethyl)-4-(3,4-dimethylphenyl)-2-methyl-1-oxo-1,2-dihydroisoquinolin-3-yl)-2-(tert-butoxy)acetate (25 mg, 0.057 mmol) in dichloromethane (DCM) (1 mL) was treated with Et3N (0.012 mL, 0.086 mmol) and dimethylsulfamoyl chloride (7.33 μL, 0.069 mmol), stirred for 15 min, and then warmed to rt for 1 hour. Additional Et3N (25 uL) and dimethylsulfamoyl chloride (15 uL) were added, the reaction was stirred at rt overnight. The reaction was concentrated and purified by column chromatography (0-10% MeOH/DCM) to afford methyl 2-(tert-butoxy)-2-(4-(3,4-dimethylphenyl)-7-(((N,N-dimethylsulfamoyl)amino)methyl)-2-methyl-1-oxo-1,2-dihydroisoquinolin-3-yl)acetate (22.6 mg, 0.042 mmol, 72.6% yield) as clear oil. 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-dimethylphenyl)-7-(((N,N-dimethylsulfamoyl)amino)methyl)-2-methyl-1-oxo-1,2-dihydroisoquinolin-3-yl)acetic acid (18.4 mg, 0.034 mmol, 82% yield) as white solid: 1H NMR (400 MHz, CHLOROFORM-d) δ ppm 8.42 (s, 1 H), 7.54 (td, J=1.9, 8.2 Hz, 1 H), 7.41-7.30 (m, 1 H), 7.30-7.23 (m, 1 H), 7.16 (dd, J=8.4, 12.9 Hz, 1 H), 7.09-6.99 (m, 1 H), 5.35 (s, 1 H), 4.53 (br. s., 1 H), 4.36 (br. s., 2 H), 3.69 (d, J=1.0 Hz, 3 H), 2.81 (s, 3 H), 2.80 (s, 3 H), 2.36 (s, 3 H), 2.32 (s, 3 H), 1.07 (s, 4.5 H), 1.06 (s, 4.5 H); LCMS (m/z) ES+=530 (M+1).

Workup

  1. stirringthe reaction was stirred at rt overnight
  2. concentrationThe reaction was concentrated
  3. custompurified by column chromatography (0-10% MeOH/DCM)

Sources & evidence

ORD record
ord-29d257404fb94c3bac8e9545e30ba3c2
Source dataset
uspto-grants-2015_05
Patent number
US09029391B2

Reaction notes

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