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 23000

Reaction equation

HRID 23000 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-f535db6c353f49dfab2f0cf78535d43a
Source dataset
uspto-grants-2005_02
Patent number
US06849643B2

Linked notes

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