Dimethylformamide → HCID 58466126, compound

HRID 1970344Notes

Reaction equation

HRID 1970344 reaction equation
FC(F)(F)S(O[C:7]1[CH:8]=[C:9]2[C@@:20]3([CH2:24][O:23][C:22]([NH2:25])=[N:21]3)[C:19]3[C:14](=[N:15][CH:16]=[C:17]([C:26]#[C:27][C:28]([O:31][CH3:32])([CH3:30])[CH3:29])[CH:18]=3)[O:13][C:10]2=[CH:11][CH:12]=1)(=O)=O.[N:35]1[CH:40]=[CH:39][CH:38]=[C:37](B(O)O)[CH:36]=1.CN(C=O)C.C(=O)([O-])[O-].[K+].[K+]>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>[CH3:32][O:31][C:28]([CH3:30])([CH3:29])[C:27]#[C:26][C:17]1[CH:18]=[C:19]2[C@:20]3([CH2:24][O:23][C:22]([NH2:25])=[N:21]3)[C:9]3[C:10](=[CH:11][CH:12]=[C:7]([C:37]4[CH:36]=[N:35][CH:40]=[CH:39][CH:38]=4)[CH:8]=3)[O:13][C:14]2=[N:15][CH:16]=1

Participants

7

Reactant 4

HCID 6228DimethylformamideHCID 11430Potassium CarbonateHCID 27343783-Pyridinylboronic acidHCID 86640728HCID 86640728, compound

Product 1

HCID 58466126HCID 58466126, compound

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 962WaterSolvent

Conditions

Temperature
70 °C

Procedure

A vial was charged with (S)-2′-amino-3-(3-methoxy-3-methylbut-1-ynyl)-5′H-spiro[chromeno[2,3-b]pyridine-5,4′-oxazole]-7-yl trifluoromethanesulfonate (104 mg, 0.210 mmol), pyridin-3-ylboronic acid (77 mg, 0.629 mmol), and tetrakis(triphenylphosphine)palladium (24.22 mg, 0.021 mmol). The vial was purged with Ar (g), then DMF (1048 μL) and potassium carbonate (524 μL, 1.048 mmol) (as a 2.0 M aq. solution) were added in sequence. The vial was capped and heated in a Biotage Initiator microwave reactor for 1.5 h at 70° C. The mixture was diluted with water (10 mL) and extracted with EtOAc (2×10 mL). The combined organic extracts were dried over sodium sulfate, filtered, and evaporated. The residue was purified by chromatography on a 25-g SNAP column, eluting with 0-60% of a 90:10:1 mixture of DCM/MeOH/NH4OH in DCM to give (S)-3-(3-methoxy-3-methylbut-1-ynyl)-7-(pyridin-3-yl)-5′H-spiro[chromeno[2,3-b]pyridine-5,4′-oxazol]-2′-amine.

Workup

  1. customThe vial was purged with Ar (g)
  2. customThe vial was capped
  3. extractionextracted with EtOAc (2×10 mL)
  4. dry with materialThe combined organic extracts were dried over sodium sulfate
  5. filtrationfiltered
  6. customevaporated
  7. customThe residue was purified by chromatography on a 25-g SNAP column
  8. washeluting with 0-60% of a 90:10:1 mixture of DCM/MeOH/NH4OH in DCM

Sources & evidence

ORD record
ord-d90303d6e37948fc9ccf7d9fd4b3881a
Source dataset
uspto-grants-2013_04
Patent number
US08426447B2

Reaction notes

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