Sulfuric Acid → Larotrectinib Sulfate

HRID 1893783Notes

Reaction equation

HRID 1893783 reaction equation
[F:1][C:2]1[CH:7]=[CH:6][C:5]([F:8])=[CH:4][C:3]=1[C@H:9]1[CH2:13][CH2:12][CH2:11][N:10]1[C:14]1[CH:19]=[CH:18][N:17]2[N:20]=[CH:21][C:22]([NH:23][C:24]([N:26]3[CH2:30][CH2:29][C@H:28]([OH:31])[CH2:27]3)=[O:25])=[C:16]2[N:15]=1.[S:32](=[O:36])(=[O:35])([OH:34])[OH:33]>CO>[S:32]([OH:36])([OH:35])(=[O:34])=[O:33].[F:1][C:2]1[CH:7]=[CH:6][C:5]([F:8])=[CH:4][C:3]=1[C@H:9]1[CH2:13][CH2:12][CH2:11][N:10]1[C:14]1[CH:19]=[CH:18][N:17]2[N:20]=[CH:21][C:22]([NH:23][C:24]([N:26]3[CH2:30][CH2:29][C@H:28]([OH:31])[CH2:27]3)=[O:25])=[C:16]2[N:15]=1

Participants

4

Reactant 2

HCID 1118Sulfuric AcidHCID 46188928Larotrectinib

Product 1

HCID 67330085Larotrectinib SulfateYield 94%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent2×

Procedure

To a solution of (S)—N-(5-((R)-2-(2,5-difluorophenyl)pyrrolidin-1-yl)pyrazolo[1,5-a]pyrimidin-3-yl)-3-hydroxypyrrolidine-1-carboxamide (4.5 mg, 0.011 mmol) in methanol (1 mL) at ambient temperature was added sulfuric acid in MeOH (105 μL, 0.011 mmol). The resulting solution was stirred for 30 minutes then concentrated to provide (S)—N-(5-((R)-2-(2,5-difluorophenyl)pyrrolidin-1-yl)pyrazolo[1,5-a]pyrimidin-3-yl)-3-hydroxypyrrolidine-1-carboxamide sulfate (5.2 mg, 0.0099 mmol, 94% yield) as a yellow solid.

Workup

  1. concentrationthen concentrated

Sources & evidence

ORD record
ord-6265af6d98e14af3a34edf9fb509cc07
Source dataset
uspto-grants-2013_08
Patent number
US08513263B2

Reaction notes

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