Sulfuric Acid → Larotrectinib Sulfate

HRID 2275351Notes

Reaction equation

HRID 2275351 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-b0142bbe1e394feebc2694fca478846c
Source dataset
uspto-grants-2015_09
Patent number
US09127013B2

Reaction notes

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