Potassium Carbonate → HCID 68629612, compound

HRID 572618Notes

Reaction equation

HRID 572618 reaction equation
Br[C:2]1[C:6]([C:7]#[N:8])=[C:5]([N:9]2[CH2:14][CH2:13][O:12][CH2:11][CH2:10]2)[S:4][C:3]=1[C:15]([O:17][CH3:18])=[O:16].B(O)(O)[C:20]1[CH:21]=[CH:22][C:23]([CH3:26])=[CH:24][CH:25]=1.C([O-])([O-])=O.[K+].[K+]>COCCOC.CCO.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:7]([C:6]1[C:2]([C:20]2[CH:25]=[CH:24][C:23]([CH3:26])=[CH:22][CH:21]=2)=[C:3]([C:15]([O:17][CH3:18])=[O:16])[S:4][C:5]=1[N:9]1[CH2:14][CH2:13][O:12][CH2:11][CH2:10]1)#[N:8]

Participants

6

Reactant 3

HCID 11430Potassium CarbonateHCID 79799Tolylboronic acidHCID 68627695Methyl 3-bromo-4-cyano-5-morpholin-4-ylthiophene-2-carboxylate

Product 1

HCID 68629612HCID 68629612, compoundYield 83%

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 20074477Dimethoxyethane ethanolSolvent

Procedure

A mixture of methyl 3-bromo-4-cyano-5-morpholin-4-ylthiophene-2-carboxylate (0.040 g, 0.12 mmol), p-tolylboronic acid (0.020 g, 0.14 mmol), tetrakis(triphenylphosphine)palladium(0) (0.004 g, 0.004), 2M aqueous K2CO3 solution (0.120 mL, 0.24 mmol) in 1,2-dimethoxyethane/EtOH (8/2) (2 mL) was subjected to MWI at 110° C. for 10 min. The reaction mixture was concentrated; the residue was diluted with water and extracted with DCM. The organic solutions were combined, washed with brine, dried over MgSO4, filtered and concentrated. The crude product was purified by column chromatography and triturated with cold MeOH to give methyl 4-cyano-3-(4-methylphenyl)-5-morpholin-4-ylthiophene-2-carboxylate (0.030 g, 83%). LCMS: (AA) ES+ 343.1. 1H NMR (400 MHz, CDCl3) δ: 7.24-7.27 (m, 4H), 3.87-3.89 (m, 4H), 3.69 (s, 3H), 3.60-3.62 (m, 4H) and 2.39 (s, 3H).

Workup

  1. concentrationThe reaction mixture was concentrated
  2. additionthe residue was diluted with water
  3. extractionextracted with DCM
  4. washwashed with brine
  5. dry with materialdried over MgSO4
  6. filtrationfiltered
  7. concentrationconcentrated
  8. customThe crude product was purified by column chromatography
  9. customtriturated with cold MeOH

Sources & evidence

ORD record
ord-96b1433097054944b73ea19370aaddb9
Source dataset
uspto-grants-2015_05
Patent number
US09029411B2

Reaction notes

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