Succinic Acid → (R)-5-(2-Ethylsulphonylethyl)-3-(N-methylpyrrolidin-2-ylmethyl)-1H-indole hemisuccinate

HRID 975026Notes

Reaction equation

HRID 975026 reaction equation
[C:1]([OH:8])(=[O:7])[CH2:2][CH2:3][C:4]([OH:6])=[O:5].[CH2:9]([S:11]([CH2:14][CH2:15][C:16]1[CH:17]=[C:18]2[C:22](=[CH:23][CH:24]=1)[NH:21][CH:20]=[C:19]2[CH2:25][C@H:26]1[CH2:30][CH2:29][CH2:28][N:27]1[CH3:31])(=[O:13])=[O:12])[CH3:10]>C(O)C>[C:1]([OH:8])(=[O:7])[CH2:2][CH2:3][C:4]([OH:6])=[O:5].[CH2:9]([S:11]([CH2:14][CH2:15][C:16]1[CH:17]=[C:18]2[C:22](=[CH:23][CH:24]=1)[NH:21][CH:20]=[C:19]2[CH2:25][C@H:26]1[CH2:30][CH2:29][CH2:28][N:27]1[CH3:31])(=[O:13])=[O:12])[CH3:10].[CH2:9]([S:11]([CH2:1][CH2:2][C:3]1[CH:4]=[C:18]2[C:22](=[CH:23][CH:24]=1)[NH:21][CH:20]=[C:19]2[CH2:25][C@H:26]1[CH2:30][CH2:29][CH2:28][N:27]1[CH3:31])(=[O:13])=[O:12])[CH3:10]

Participants

4

Reactant 2

HCID 1110Succinic AcidHCID 9884122(R)-5-(2-Ethylsulphonylethyl)-3-(N-methylpyrrolidin-2-ylmethyl)1H-indole

Product 1

HCID 131719486(R)-5-(2-Ethylsulphonylethyl)-3-(N-methylpyrrolidin-2-ylmethyl)-1H-indole hemisuccinateYield 163.1%

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent2×

Procedure

A solution of succinic acid (69 mg) in hot ethanol (3.5 mL) was added slowly with stirring to a solution of (R)-5-(2-ethylsulphonylethyl)-3-(N-methylpyrrolidin-2-ylmethyl)-1H-indole free base (390 mg) in ethanol (3.5 mL). The solution was evaporated and the residue was triturated first with ether and then with ethyl acetate to give the title compound as a solid (375 mg): mp 59°-62° C.: [α]25D =+36° (methanol, c=0.10). Anal Calcd for C18H26N2O2S. 0.5 C4H6O4. 0.25 CH3CO2C2H5. 0.5 H2O: C, 59.00; H, 7.42; H, 6.68. Found: C, 59.17; H, 7.37; N, 6.73.

Workup

  1. customThe solution was evaporated
  2. customthe residue was triturated first with ether

Sources & evidence

ORD record
ord-ad7609b733264f4195d017d637e06f47
Source dataset
uspto-grants-1997_03
Patent number
US05607951

Reaction notes

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