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Methyl 4-bromobenzoate → Methyl 4-[(3,5-difluorophenyl)methylamino]benzoate

HRID 483
Notes
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Reaction equation

HRID 483 reaction equation
COC(=O)c1ccc(Br)cc1.NCc1cc(F)cc(F)c1>CC(=O)O.CC(=O)O.Cc1ccccc1.O=C([O-])[O-].[Cs+].[Cs+].[Pd].c1ccc(P(c2ccccc2)c2ccc3ccccc3c2-c2c(P(c3ccccc3)c3ccccc3)ccc3ccccc23)cc1>COC(=O)c1ccc(NCc2cc(F)cc(F)c2)cc1
ParticipantsConditionsProcedureSources & evidenceReaction notes

Participants

7

Reactant 2

HCID 12081Methyl 4-bromobenzoateHCID 1452113,5-Difluorobenzylamine

Product 1

HCID 86784851Methyl 4-[(3,5-difluorophenyl)methylamino]benzoateYield 0%

Reagents, catalysts & solvents 4

HCID 10796Cesium carbonateReagentHCID 634876Binap, (A+-)-Catalyst
HCID 4144353
Palladium (II) acetate
Catalyst
HCID 1140TolueneSolvent

Conditions

Temperature
100 °C

Procedure

methyl 4-bromobenzoate (1.8 g, 8.37 mmol), (3,5-difluorophenyl)methanamine (1.980 mL, 16.74 mmol) and Cesium carbonate (2.73 g, 8.37 mmol) were mixed in toluene (4 mL) and degassed by bubbling nitrogen through solution. Palladium acetate (0.094 g, 0.42 mmol) and rac-2,2'-Bis(diphenylphosphino)-1,1'-binaphthyl (0.365 g, 0.59 mmol) were added and the vial was capped and heated at 100°C over 5 days. Workup by dilution with EtOAc, washing with water, then extraction with 2M HCl. The HCl extract was neutralized with 2M NaOH and extracted with EtOAc and the EtOAc phase was dried (K2CO3) and evaporated to give the crude product. The desired amine was not the compound isolated. Discarded.

Sources & evidence

ORD record
ord-a50a848eea9042a19d3b9efbefd39662
Source dataset
750 AstraZeneca ELN dataset
Original link
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Reaction notes

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On this pageParticipantsConditionsProcedureSources & evidenceReaction notes