3-Bromoquinoline → HCID 10081720, compound

HRID 717767Notes

Reaction equation

HRID 717767 reaction equation
Br[C:2]1[CH:3]=[N:4][C:5]2[C:10]([CH:11]=1)=[CH:9][CH:8]=[CH:7][CH:6]=2.P([O-])([O-])([O-])=O.[K+].[K+].[K+].B(O)(O)[C:21]1[CH:26]=[CH:25][N:24]=[CH:23][CH:22]=1>CN(C=O)C.O.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>[N:24]1[CH:25]=[CH:26][C:21]([C:2]2[CH:3]=[N:4][C:5]3[C:10]([CH:11]=2)=[CH:9][CH:8]=[CH:7][CH:6]=3)=[CH:22][CH:23]=1

Participants

7

Reactant 3

HCID 214133-BromoquinolineHCID 62657Potassium Phosphate, TribasicHCID 2734379(Pyridin-4-yl)boronic acid

Product 1

HCID 10081720HCID 10081720, compoundYield 65.7%

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 962WaterSolventHCID 21962138N,N-Dimethylformamide--water (1/1)Solvent

Conditions

Temperature
80 °C

Procedure

3-Bromo quinoline (0.2 g, 0.00096 mol) was dissolved in DMF:water (3:1, 4 mL). To this was added potassium phosphate (0.611 g, 0.00288 mol) and pyridyl-4-boronic acid (0.141 g, 0.00115 mol) at RT. The reaction mixture was degassed for 5 min, and to this was added Pd(PPh3)4 (0.055 g, 0.000048 mol). The reaction mixture was heated by microwave at 80° C. for 1.5 h. After completion of reaction (monitored by TLC), the mixture was diluted with water (20 mL) and extracted with EtOAc (3×50 mL). The organic layer was dried over anhydrous sodium sulfate and concentrated under vacuum, and the residue purified by column chromatography (45% ethylacetate:hexane in silica 100-200 mesh, diameter of column—5.0 cm, height of silica—approx. 5 inch) to provide the desired compound (0.13 g, 63% yield).

Workup

  1. customThe reaction mixture was degassed for 5 min
  2. customAfter completion of reaction (monitored by TLC)
  3. extractionextracted with EtOAc (3×50 mL)
  4. dry with materialThe organic layer was dried over anhydrous sodium sulfate
  5. concentrationconcentrated under vacuum
  6. customthe residue purified by column chromatography (45% ethylacetate:hexane in silica 100-200 mesh, diameter of column—5.0 cm, height of silica—approx. 5 inch)

Sources & evidence

ORD record
ord-5dcf9b1d8be24738a8df3bdcc0a7fe02
Source dataset
uspto-grants-2015_11
Patent number
US09193728B2

Reaction notes

Loading…