Sodium triacetoxyborohydride → (R)-4-((1-tert-butoxy-3-methyl-1-oxobutan-2-ylamino)methyl)-5-fluoro-1-tosyl-1H-pyrrolo[2,3-b]pyridine-3-carboxylic acid

HRID 1627161Notes

Reaction equation

HRID 1627161 reaction equation
C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+].Cl.[NH2:16][C@H:17]([CH:25]([CH3:27])[CH3:26])[C:18]([O:20][C:21]([CH3:24])([CH3:23])[CH3:22])=[O:19].[F:28][C:29]1[C:30]([CH:51]=O)=[C:31]2[C:37]([C:38]([O-:40])=[O:39])=[CH:36][N:35]([S:41]([C:44]3[CH:50]=[CH:49][C:47]([CH3:48])=[CH:46][CH:45]=3)(=[O:43])=[O:42])[C:32]2=[N:33][CH:34]=1>C(Cl)Cl>[C:21]([O:20][C:18](=[O:19])[C@H:17]([NH:16][CH2:51][C:30]1[C:29]([F:28])=[CH:34][N:33]=[C:32]2[N:35]([S:41]([C:44]3[CH:50]=[CH:49][C:47]([CH3:48])=[CH:46][CH:45]=3)(=[O:43])=[O:42])[CH:36]=[C:37]([C:38]([OH:40])=[O:39])[C:31]=12)[CH:25]([CH3:27])[CH3:26])([CH3:22])([CH3:24])[CH3:23]

Participants

5

Reactant 3

HCID 5049666Sodium triacetoxyborohydrideHCID 45108216H-D-Val-OtBu hydrochlorideHCID 866542085-fluoro-4-formyl-1-tosyl-1H-pyrrolo[2,3-b]pyridine-3-carboxylate

Product 1

HCID 58293452(R)-4-((1-tert-butoxy-3-methyl-1-oxobutan-2-ylamino)methyl)-5-fluoro-1-tosyl-1H-pyrrolo[2,3-b]pyridine-3-carboxylic acid

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

A mixture of sodium triacetoxyborohydride (1.143 g, 5.39 mmol), (R)-tert-butyl 2-amino-3-methylbutanoate hydrochloride (1.131 g, 5.39 mmol) and DCM (20 mL) was stirred at room temperature for 10 min. The reaction mixture was cooled to 0° C. 5-fluoro-4-formyl-1-tosyl-1H-pyrrolo[2,3-b]pyridine-3-carboxylate (1.299 g, 3.60 mmol) was added and the reaction was stirred at 0° C. for 20 min to afford the title compound. [M+H] calc'd for C25H30FN3O6S, 520; found, 520.2.

Workup

  1. temperatureThe reaction mixture was cooled to 0° C
  2. stirringthe reaction was stirred at 0° C. for 20 min

Sources & evidence

ORD record
ord-bea26e4636fe4d9ab082f0e73370258c
Source dataset
uspto-grants-2014_07
Patent number
US08785429B2

Reaction notes

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