Sodium triacetoxyborohydride → HCID 42629294, compound

HRID 1806393Notes

Reaction equation

HRID 1806393 reaction equation
[CH2:1]([S:3]([N:6]1[CH2:11][CH2:10][CH:9]([C:12]2[C:20]3[C:15](=[C:16]([C:28]([NH2:30])=[O:29])[CH:17]=[C:18]([C:21]4[CH:25]=[C:24]([CH:26]=O)[S:23][CH:22]=4)[CH:19]=3)[NH:14][CH:13]=2)[CH2:8][CH2:7]1)(=[O:5])=[O:4])[CH3:2].C[N:32]1[CH2:36][CH2:35][CH2:34][C@@H:33]1[CH3:37].C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>CS(C)=O.C(O)(=O)C>[CH2:1]([S:3]([N:6]1[CH2:11][CH2:10][CH:9]([C:12]2[C:20]3[C:15](=[C:16]([C:28]([NH2:30])=[O:29])[CH:17]=[C:18]([C:21]4[CH:25]=[C:24]([CH2:26][N:32]5[CH2:36][CH2:35][CH2:34][C@@H:33]5[CH3:37])[S:23][CH:22]=4)[CH:19]=3)[NH:14][CH:13]=2)[CH2:8][CH2:7]1)(=[O:4])=[O:5])[CH3:2]

Participants

6

Reactant 3

HCID 5049666Sodium triacetoxyborohydrideHCID 11434918(2S)-1,2-dimethylpyrrolidineHCID 577327033-[1-(ethylsulfonyl)-4-piperidinyl]-5-(5-formyl-3-thienyl)-1H-indole-7-carboxamide

Product 1

HCID 42629294HCID 42629294, compoundYield 17.3%

Reagents, catalysts & solvents 2

HCID 176Acetic AcidCatalystHCID 679Dimethyl SulfoxideSolvent

Procedure

To a solution of 3-[1-(ethylsulfonyl)-4-piperidinyl]-5-(5-formyl-3-thienyl)-1H-indole-7-carboxamide (600 mg, 1.348 mmol) in dimethyl sulfoxide (10 mL) was added of 20 drops of acetic acid and (2S)-1,2-dimethylpyrrolidine (1.37 mL, 13.483 mmol). The resulting mixture was stirred at room temperature for 6 h followed by an addition of sodium triacetoxyborohydride (2.858 g, 13.483 mmol). The reaction was stirred at room temperature overnight then purified by SFC. This compound was separated by RTP CASS Group. The fraction of enantiomer #1 is 99.7% chirally pure to give 119.9 mg of the title compound (17.3%).

Workup

  1. stirringThe reaction was stirred at room temperature overnight
  2. customthen purified by SFC
  3. customThis compound was separated by RTP CASS Group

Sources & evidence

ORD record
ord-708326e1c89a40e08058fe6eb01b98b7
Source dataset
uspto-grants-2013_01
Patent number
US08354406B2

Reaction notes

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