Water → HCID 58466322, compound

HRID 335907Notes

Reaction equation

HRID 335907 reaction equation
[F:1][C:2]1[N:7]=[C:6]2[O:8][C:9]3[C:14]([C:15]4([CH2:19][O:18][C:17]([NH2:20])=[N:16]4)[C:5]2=[CH:4][C:3]=1I)=[CH:13][C:12]([C:21]1[C:22]([F:27])=[N:23][CH:24]=[CH:25][CH:26]=1)=[CH:11][CH:10]=3.[O:29]1[CH2:34][CH:33]=[C:32](B2OC(C)(C)C(C)(C)O2)[CH2:31][CH2:30]1.P([O-])([O-])([O-])=O.[K+].[K+].[K+].O>O1CCOCC1.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>[O:29]1[CH2:30][CH:31]=[C:32]([C:3]2[CH:4]=[C:5]3[C:15]4([CH2:19][O:18][C:17]([NH2:20])=[N:16]4)[C:14]4[C:9](=[CH:10][CH:11]=[C:12]([C:21]5[C:22]([F:27])=[N:23][CH:24]=[CH:25][CH:26]=5)[CH:13]=4)[O:8][C:6]3=[N:7][C:2]=2[F:1])[CH2:33][CH2:34]1

Participants

7

Reactant 4

HCID 962WaterHCID 62657Potassium Phosphate, TribasicHCID 112180533,6-Dihydro-2H-pyran-4-boronic acid pinacol esterHCID 58466183HCID 58466183, compound

Product 1

HCID 58466322HCID 58466322, compound

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 312751,4-DioxaneSolvent

Conditions

Temperature
120 °C

Procedure

2-Fluoro-7-(2-fluoropyridin-3-yl)-3-iodo-5′H-spiro[chromeno[2,3-b]pyridine-5,4′-oxazol]-2′-amine (0.151 g, 0.307 mmol), 2-(3,6-dihydro-2H-pyran-4-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (0.150 g, 0.71 mmol), tetrakis(triphenylphosphine)palladium (0.177 g, 0.153 mmol), and potassium phosphate (0.102 mL, 1.227 mmol) were suspended in dioxane (2 mL) and water (0.5 mL) and sealed in a microwave vessel under argon. The mixture was heated to 120° C. for 20 minutes. The reaction mixture was concentrated under reduced pressure and partitioned between water (80 mL) and ethyl acetate (80 mL). The organic was dried with magnesium sulfate and evaporated to dryness under reduced pressure. Purification using silica chromatography (1-4% methanol in dichloromethane gradient) gave 3-(3,6-dihydro-2H-pyran-4-yl)-2-fluoro-7-(2-fluoropyridin-3-yl)-5′H-spiro[chromeno[2,3-b]pyridine-5,4′-oxazol]-2′-amine.

Workup

  1. concentrationThe reaction mixture was concentrated under reduced pressure
  2. custompartitioned between water (80 mL) and ethyl acetate (80 mL)
  3. dry with materialThe organic was dried with magnesium sulfate
  4. customevaporated to dryness under reduced pressure
  5. customPurification

Sources & evidence

ORD record
ord-fe0c9f06dc294875bd79e7097284c6af
Source dataset
uspto-grants-2014_11
Patent number
US08883782B2

Reaction notes

Loading…