Dimethylformamide → HCID 51355613, compound

HRID 2385678Notes

Reaction equation

HRID 2385678 reaction equation
Br[C:2]1[CH:3]=[CH:4][C:5]2[O:14][CH2:13][CH2:12][C:11]3[S:10][C:9]([C:15]4[N:16]([CH:20]([CH3:22])[CH3:21])[N:17]=[CH:18][N:19]=4)=[N:8][C:7]=3[C:6]=2[CH:23]=1.[CH3:24][N:25](C=O)C>[C-]#N.[Zn+2].[C-]#N.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>[CH:20]([N:16]1[C:15]([C:9]2[S:10][C:11]3[CH2:12][CH2:13][O:14][C:5]4[CH:4]=[CH:3][C:2]([C:24]#[N:25])=[CH:23][C:6]=4[C:7]=3[N:8]=2)=[N:19][CH:18]=[N:17]1)([CH3:22])[CH3:21]

Participants

5

Reactant 2

HCID 6228DimethylformamideHCID 532349749-Bromo-2-(2-isopropyl-2H-[1,2,4]triazol-3-yl)-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulene

Product 1

HCID 51355613HCID 51355613, compoundYield 73%

Reagents, catalysts & solvents 2

HCID 11186Zinc cyanide (Zn(CN)2)CatalystHCID 178418397HCID 178418397, compoundCatalyst

Conditions

Temperature
175 °C

Procedure

9-Bromo-2-(2-isopropyl-2H-[1,2,4]triazol-3-yl)-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulene from Example 6 (120 mg, 0.31 mmol) was dissolved in DMF (1.6 mL) in a 10-mL microwave vial. Purged with N2 and added zinc cyanide (36 mg, 0.31 mmol) followed by tetrakis(triphenylphosphine)palladium(0) (18 mg, 0.015 mmol). Sealed the vial and evacuated and recycled twice with N2. The vessel was subjected to microwave irradiation with stirring for 10 min at 175° C. The vessel was then cooled to r.t. and the reaction mixture was diluted with dichloromethane and water. The phases were separated and the organic layer was washed once with water, dried over MgSO4, filtered and concentrated in vacuo. The crude residue was purified by ISCO chromatography (40 g column, 0-10% MeOH/DCM) to provide 76 mg (73% yield) of 136. LC/MS (ESI+): m/z 338 (M+H)

Workup

  1. customPurged with N2
  2. customSealed the vial and
  3. customevacuated
  4. customirradiation
  5. temperatureThe vessel was then cooled to r.t.
  6. additionthe reaction mixture was diluted with dichloromethane and water
  7. customThe phases were separated
  8. washthe organic layer was washed once with water
  9. dry with materialdried over MgSO4
  10. filtrationfiltered
  11. concentrationconcentrated in vacuo
  12. customThe crude residue was purified by ISCO chromatography (40 g column, 0-10% MeOH/DCM)

Sources & evidence

ORD record
ord-26705f14b87741399a95d44633180463
Source dataset
uspto-grants-2012_09
Patent number
US08263633B2

Reaction notes

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