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1,2,3,4-Tetrahydroisoquinoline → methyl 4-(3,4-dihydro-1H-isoquinolin-2-yl)benzoate

HRID 484
Notes
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Reaction equation

HRID 484 reaction equation
COC(=O)c1ccc(Br)cc1.c1ccc2c(c1)CCNC2>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(N2CCc3ccccc3C2)cc1
ParticipantsConditionsProcedureSources & evidenceReaction notes

Participants

7

Reactant 2

HCID 70461,2,3,4-TetrahydroisoquinolineHCID 12081Methyl 4-bromobenzoate

Product 1

HCID 57327469methyl 4-(3,4-dihydro-1H-isoquinolin-2-yl)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 (100 mg, 0.47 mmol), [Reactants] and Cesium carbonate (152 mg, 0.47 mmol) were mixed in toluene (4 mL) and degassed by bubbling nitrogen through solution. Palladium acetate (5.22 mg, 0.02 mmol) and rac-2,2'-Bis(diphenylphosphino)-1,1'-binaphthyl (20.27 mg, 0.03 mmol) were added and the vial was capped and heated at 100°C over 5 days. Product had formed in mixture. 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. No product. Discarded.

Sources & evidence

ORD record
ord-d7ba527a2d2d4d7591368f0e50bee26a
Source dataset
750 AstraZeneca ELN dataset
Original link
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Reaction notes

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On this pageParticipantsConditionsProcedureSources & evidenceReaction notes