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Potassium Carbonate → (R)-3-[N'-t-Butoxycarbonyl-N-(3'-chlorobiphenyl-4-ylmethyl)-hydrazino]-2-hydroxy-propionic Acid

HRID 2272634
Notes
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Reaction equation

HRID 2272634 reaction equation
C[O:2][C:3](=[O:24])[C@H:4]([OH:23])[CH2:5][N:6]([CH2:15][C:16]1[CH:21]=[CH:20][C:19](Br)=[CH:18][CH:17]=1)[NH:7][C:8]([O:10][C:11]([CH3:14])([CH3:13])[CH3:12])=[O:9].[Cl:25][C:26]1[CH:27]=[C:28](B(O)O)[CH:29]=[CH:30][CH:31]=1.C([O-])([O-])=O.[K+].[K+]>C1COCC1.O.[Cl-].[NH4+].[Pd].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>[C:11]([O:10][C:8]([NH:7][N:6]([CH2:5][C@@H:4]([OH:23])[C:3]([OH:2])=[O:24])[CH2:15][C:16]1[CH:21]=[CH:20][C:19]([C:30]2[CH:29]=[CH:28][CH:27]=[C:26]([Cl:25])[CH:31]=2)=[CH:18][CH:17]=1)=[O:9])([CH3:14])([CH3:13])[CH3:12]
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

8

Reactant 3

HCID 11430Potassium CarbonateHCID 2734323(3-Chlorophenyl)boronic acidHCID 67972599(R)-3-[N-(4-Bromobenzyl)-N'-t-butoxycarbonylhydrazino]-2-hydroxypropionic acid methyl ester

Product 1

HCID 67972781(R)-3-[N'-t-Butoxycarbonyl-N-(3'-chlorobiphenyl-4-ylmethyl)-hydrazino]-2-hydroxy-propionic Acid

Reagents, catalysts & solvents 4

HCID 11979704
Tetrakis(triphenylphosphine)palladium
Catalyst
HCID 962WaterSolvent
HCID 8028TetrahydrofuranSolvent
HCID 25517Ammonium ChlorideSolvent

Conditions

Temperature
90 °C

Procedure

(R)-3-[N-(4-Bromobenzyl)-N′-t-butoxycarbonyl-hydrazino]-2-hydroxy-propionic acid methyl ester (1.0 g, 2.5 mmol), 3-chlorophenylboronic acid (776 mg, 5.0 mmol), and K2CO3 (857 mg, 6.2 mmol) were dissolved in a mixture of THF (18 mL) and water (18 mL). The reaction flask was then purged with nitrogen and tetrakis(triphenylphosphine) palladium(0) (286 mg, 248 μmol) was added. The mixture was stirred at 90° C. overnight (˜18 hours). The mixture was diluted with saturated aqueous ammonium chloride and extracted with EtOAc. The organic layer was collected, dried and concentrated. The product was purified (Interchim reverse phase chromatography column, 10-80% MeCN in water) to yield the title compound.

Workup

  1. additionwas added
  2. extractionextracted with EtOAc
  3. customThe organic layer was collected
  4. customdried
  5. concentrationconcentrated
  6. customThe product was purified (Interchim reverse phase chromatography column, 10-80% MeCN in water)

Sources & evidence

ORD record
ord-32fc4adffb0a49a186712aa38b41bf85
Source dataset
uspto-grants-2015_09
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US09120758B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes