Sodium Carbonate → HCID 57906537, compound

HRID 420496Notes

Reaction equation

HRID 420496 reaction equation
[C:1]([O:5][C:6](=[O:17])[NH:7][CH2:8][C:9]1[C:14](Br)=[CH:13][N:12]=[C:11]([NH2:16])[CH:10]=1)([CH3:4])([CH3:3])[CH3:2].[Cl:18][C:19]1[CH:24]=[C:23]([Cl:25])[CH:22]=[CH:21][C:20]=1B(O)O.C([O-])([O-])=O.[Na+].[Na+]>COCCOC.CCOC(C)=O.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[C:1]([O:5][C:6](=[O:17])[NH:7][CH2:8][C:9]1[C:14]([C:22]2[CH:21]=[CH:20][C:19]([Cl:18])=[CH:24][C:23]=2[Cl:25])=[CH:13][N:12]=[C:11]([NH2:16])[CH:10]=1)([CH3:4])([CH3:3])[CH3:2]

Participants

7

Reactant 3

HCID 10340Sodium CarbonateHCID 2734659(2,4-Dichlorophenyl)boronic acidHCID 57906440HCID 57906440, compound

Product 1

HCID 57906537HCID 57906537, compoundYield 59%

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 80711,2-DimethoxyethaneSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
150 °C

Procedure

In a sealed tube, a mixture of (2-amino-5-bromo-pyridin-4-ylmethyl)-carbamic acid tert-butyl ester (4.48 g, 14.8 mmol, prepared according to Example 1, Step 1.3), 2,4-dichloro-benzeneboronic acid (4.24 g, 22.2 mmol), Pd(PPh3)4 (855 mg, 0.74 mmol) and Na2CO3 (2.0 M solution in water, 26 mL, 52.0 mmol) in DME (50 mL) was heated at 150° C. for 17 min in a microwave oven. The reaction mixture was cooled to RT, diluted in AcOEt and washed with water. The organic layer was dried over Na2SO4, filtered and evaporated. The residue was purified by Combi-Flash Companion™ (Isco Inc.) column chromatography (SiO2; gradient elution, [hexane/DCM 1:1]/TBME 95:5→100% TBME) to yield the title compound (3.2 g, 8.7 mmol, 59%) as a white solid. MS: 368 [M−1]+; HPLC: AtRet=1.69.

Workup

  1. temperatureThe reaction mixture was cooled to RT
  2. washwashed with water
  3. dry with materialThe organic layer was dried over Na2SO4
  4. filtrationfiltered
  5. customevaporated
  6. customThe residue was purified by Combi-Flash Companion™ (Isco Inc.) column chromatography (SiO2; gradient elution, [hexane/DCM 1:1]/TBME 95:5→100% TBME)

Sources & evidence

ORD record
ord-5e651189c8714aec8c4b22f9b298cc88
Source dataset
uspto-grants-2012_01
Patent number
US08097617B2

Reaction notes

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