Hydrochloric Acid → 3-[1-[3-[(methylsulfonyl)oxy]propyl]-1H-indazol-3-yl]-4-[1-(2-naphthalenyl)-1H-indol-3-yl]-1H-pyrrole-2,5-dione

HRID 968658Notes

Reaction equation

HRID 968658 reaction equation
N1C=CC=CC=1.[CH3:7][S:8]([O:11]S(C)(=O)=O)(=[O:10])=[O:9].O[CH2:17][CH2:18][CH2:19][N:20]1[C:28]2[C:23](=[CH:24][CH:25]=[CH:26][CH:27]=2)[C:22]([C:29]2[C:30](=[O:54])[NH:31][C:32](=[O:53])[C:33]=2[C:34]2[C:42]3[C:37](=[CH:38][CH:39]=[CH:40][CH:41]=3)[N:36]([C:43]3[CH:52]=[CH:51][C:50]4[C:45](=[CH:46][CH:47]=[CH:48][CH:49]=4)[CH:44]=3)[CH:35]=2)=[N:21]1.Cl>C1COCC1>[CH3:7][S:8]([O:11][CH2:17][CH2:18][CH2:19][N:20]1[C:28]2[C:23](=[CH:24][CH:25]=[CH:26][CH:27]=2)[C:22]([C:29]2[C:30](=[O:54])[NH:31][C:32](=[O:53])[C:33]=2[C:34]2[C:42]3[C:37](=[CH:38][CH:39]=[CH:40][CH:41]=3)[N:36]([C:43]3[CH:52]=[CH:51][C:50]4[C:45](=[CH:46][CH:47]=[CH:48][CH:49]=4)[CH:44]=3)[CH:35]=2)=[N:21]1)(=[O:10])=[O:9]

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 1049PyridineHCID 81560Methanesulfonic anhydrideHCID 101184493-[1-(3-hydroxypropyl)-1H-indazol-3-yl]-4-[1-(2-naphthalenyl)-1H-indol-3-yl]-1H-pyrrole-2,5-dione

Product 1

HCID 225919653-[1-[3-[(methylsulfonyl)oxy]propyl]-1H-indazol-3-yl]-4-[1-(2-naphthalenyl)-1H-indol-3-yl]-1H-pyrrole-2,5-dione

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent2×

Conditions

Temperature
50 °C

Procedure

Following the procedure of Example 26, pyridine (0.7 g, 8.35 mmol) and methanesulfonic anhydride (1.09 g, 6.26 mmol) were added to Compound 84 (1.07 g, 2.09 mmol) (prepared in Example 24) in THF (20 mL). The mixture was heated at 50° C. for 2 h, then cooled to rt. Another portion of THF (10 mL) was added, followed by addition of 1N HCl (10 mL). The mixture was stirred for 15 min, then extracted with EtOAc several times. The combined EtOAc layers were washed once with 1 N HCl (10 mL), water (2×20 mL) and saturated NaCl (20 mL), then dried (Na2SO4) and evaporated in vacuo to obtain a 3-[1-[3-[(methylsulfonyl)oxy]propyl]-1H-indazol-3-yl]-4-[1-(2-naphthalenyl)-1H-indol-3-yl]-1H-pyrrole-2,5-dione analog of Compound 26a (1.1 g, 92%) as a reddish solid. ES-MS m/z 591 (MH+).

Workup

  1. temperaturecooled to rt
  2. extractionextracted with EtOAc several times
  3. washThe combined EtOAc layers were washed once with 1 N HCl (10 mL), water (2×20 mL) and saturated NaCl (20 mL)
  4. dry with materialdried (Na2SO4)
  5. customevaporated in vacuo

Sources & evidence

ORD record
ord-fd010addb50d4db7bae0dbad9e307fbb
Source dataset
uspto-grants-2007_12
Patent number
US07304060B2

Reaction notes

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