Methanesulfonyl chloride → (S)-3,5-dichloro-4-(2-(3-(cyclopropylmethoxy)-4-(difluoromethoxy)phenyl)-2-(2-(6-(methylsulfonamido)-1-oxoisoindolin-2-yl)acetoxy)ethyl)pyridine 1-oxide

HRID 571180Notes

Reaction equation

HRID 571180 reaction equation
[NH2:1][C:2]1[CH:10]=[C:9]2[C:5]([CH2:6][N:7]([CH2:12][C:13]([O:15][C@H:16]([C:27]3[CH:32]=[CH:31][C:30]([O:33][CH:34]([F:36])[F:35])=[C:29]([O:37][CH2:38][CH:39]4[CH2:41][CH2:40]4)[CH:28]=3)[CH2:17][C:18]3[C:23]([Cl:24])=[CH:22][N+:21]([O-:25])=[CH:20][C:19]=3[Cl:26])=[O:14])[C:8]2=[O:11])=[CH:4][CH:3]=1.[CH3:42][S:43](Cl)(=[O:45])=[O:44]>C(Cl)Cl.N1C=CC=CC=1>[Cl:24][C:23]1[CH:22]=[N+:21]([O-:25])[CH:20]=[C:19]([Cl:26])[C:18]=1[CH2:17][C@@H:16]([C:27]1[CH:32]=[CH:31][C:30]([O:33][CH:34]([F:35])[F:36])=[C:29]([O:37][CH2:38][CH:39]2[CH2:40][CH2:41]2)[CH:28]=1)[O:15][C:13](=[O:14])[CH2:12][N:7]1[CH2:6][C:5]2[C:9](=[CH:10][C:2]([NH:1][S:43]([CH3:42])(=[O:45])=[O:44])=[CH:3][CH:4]=2)[C:8]1=[O:11]

Participants

5

Reactant 2

HCID 31297Methanesulfonyl chlorideHCID 86681602(S)-4-(2-(2-(6-amino-1-oxoisoindolin-2-yl)acetoxy)-2-(3-(cyclopropylmethoxy)-4-(difluoromethoxy)phenyl)ethyl)-3,5-dichloropyridine 1-oxide

Product 1

HCID 86681603(S)-3,5-dichloro-4-(2-(3-(cyclopropylmethoxy)-4-(difluoromethoxy)phenyl)-2-(2-(6-(methylsulfonamido)-1-oxoisoindolin-2-yl)acetoxy)ethyl)pyridine 1-oxideYield 75%

Reagents, catalysts & solvents 2

HCID 1049PyridineSolventHCID 6344DichloromethaneSolvent2×

Procedure

(S)-4-(2-(2-(6-amino-1-oxoisoindolin-2-yl)acetoxy)-2-(3-(cyclopropylmethoxy)-4-(difluoromethoxy)phenyl)ethyl)-3,5-dichloropyridine 1-oxide (50 mg, 0.08 mmol) was dissolved in CH2Cl2 (2 ml) and pyridine (50 μl), then methanesulfonyl chloride was added (11 mg, 0.1 mmol) at 0° C. The mixture was stirred at RT for 2 hours, then diluted with CH2Cl2 (20 ml) and quenched with HCl 1N aqueous solution (30 ml). The two phases were separated, and the organic phase washed with HCl 1N aqueous solution (2×20 ml), dried over Na2SO4 and evaporated under vacuum. The crude was purified by preparative HPLC (Method 2) to yield 41 mg of the title compound. (Yield 75%). 1H NMR (400 MHz, acetone) δ ppm 8.71-8.92 (m, 1H), 8.22 (s, 2H), 7.73 (m, 1H), 7.59 (m, 2H), 7.15-7.30 (m, 2H), 7.05 (dd, J=8.38, 1.76 Hz, 1H), 6.93 (t, 1H, CHF2), 6.15 (dd, J=9.70, 4.85 Hz, 1H), 4.49 (s, 2H), 4.44 (d, J=3.53 Hz, 2H), 3.98 (d, J=7.06 Hz, 2H), 3.55 (dd, J=14.11, 9.26 Hz, 1H), 3.32 (dd, J=14.11, 4.85 Hz, 1H), 3.05 (s, 3H), 1.29 (m, 1H), 0.55-0.69 (m, 2H), 0.27-0.47 (m, 2H); MS/ESI+ 686.51 [MH]+.

Workup

  1. customquenched with HCl 1N aqueous solution (30 ml)
  2. customThe two phases were separated
  3. washthe organic phase washed with HCl 1N aqueous solution (2×20 ml)
  4. dry with materialdried over Na2SO4
  5. customevaporated under vacuum
  6. customThe crude was purified by preparative HPLC (Method 2)

Sources & evidence

ORD record
ord-52d70e72555741ccb07abb36ec05dee3
Source dataset
uspto-grants-2015_05
Patent number
US09024027B2

Reaction notes

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