Methanesulfonic Acid → HCID 178489575, compound

HRID 1600047Notes

Reaction equation

HRID 1600047 reaction equation
[Cl:1][C:2]1[CH:3]=[CH:4][C:5]2[C:6](=[O:26])[C:7]3[C:14](=[O:15])[N:13]([NH:16][C:17]4[CH:22]=[CH:21][CH:20]=[CH:19][C:18]=4[O:23][CH3:24])[C:12](=[O:25])[C:8]=3[NH:9][C:10]=2[CH:11]=1.CS(O)(=O)=O>CO>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]2[C:6](=[O:26])[C:7]3[C:14]([OH:15])=[N:13][N:16]([C:17]4[CH:22]=[CH:21][CH:20]=[CH:19][C:18]=4[O:23][CH3:24])[C:12](=[O:25])[C:8]=3[NH:9][C:10]=2[CH:11]=1

Participants

4

Reactant 2

HCID 6395Methanesulfonic AcidHCID 21997679HCID 21997679, compound

Product 1

HCID 178489575HCID 178489575, compoundYield 50%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

A stirred suspension of 6-chloro-2-(2-methoxyanilino)2,3,4,9-tetrahydro-1H-pyrrolo[3,4-b]-quinoline-1,3,9-trione (1.78 g, 4.81 mM) in a solution of methanol (285 mL) and methanesulfonic acid (89 mL) was refluxed for 8 hours during which time a tan precipitate formed. The resulting suspension was cooled to room temperature and stirred for 16 hours. The suspension was filtered (the filtrate was saved for use in Example 30) and the collected solids were washed with methanol and then ether to give the title compound (0.889 g, 50%) as a yellow powder, mp 356°-359° C.; MS(CI): 370 (M+H).

Workup

  1. temperaturewas refluxed for 8 hours during which time a tan precipitate
  2. customformed
  3. filtrationThe suspension was filtered (the filtrate
  4. washwere washed with methanol

Sources & evidence

ORD record
ord-29285416162243999efc5278729da3b8
Source dataset
uspto-grants-1998_04
Patent number
US05744471

Reaction notes

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