Cesium carbonate → 4-Chloro-2-{4,4-dimethyl-9-oxo-7-thia-10-azatricyclo[6.4.0.02,6]dodeca-1(8),2(6)-dien-10-yl}pyridine-3-carbaldehyde

HRID 1021618Notes

Reaction equation

HRID 1021618 reaction equation
Br[C:2]1[N:9]=[CH:8][CH:7]=[C:6]([Cl:10])[C:3]=1[CH:4]=[O:5].[CH3:11][C:12]1([CH3:25])[CH2:24][C:15]2[C:16]3[CH2:21][CH2:20][NH:19][C:18](=[O:22])[C:17]=3[S:23][C:14]=2[CH2:13]1.CC1(C)C2C(=C(P(C3C=CC=CC=3)C3C=CC=CC=3)C=CC=2)OC2C(P(C3C=CC=CC=3)C3C=CC=CC=3)=CC=CC1=2.C([O-])([O-])=O.[Cs+].[Cs+]>C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd].O1CCOCC1>[Cl:10][C:6]1[CH:7]=[CH:8][N:9]=[C:2]([N:19]2[CH2:20][CH2:21][C:16]3[C:15]4[CH2:24][C:12]([CH3:11])([CH3:25])[CH2:13][C:14]=4[S:23][C:17]=3[C:18]2=[O:22])[C:3]=1[CH:4]=[O:5]

Participants

7

Reactant 4

HCID 10796Cesium carbonateHCID 6360441,1'-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(1,1-diphenylphosphine)HCID 580438956,6-Dimethyl-2,3,4,5,6,7-hexahydro-1H-cyclopenta[4,5]thieno[2,3-c]pyridin-1-oneHCID 866839142-Bromo-4-chloropyridine-3-carbaldehyde

Product 1

HCID 866841854-Chloro-2-{4,4-dimethyl-9-oxo-7-thia-10-azatricyclo[6.4.0.02,6]dodeca-1(8),2(6)-dien-10-yl}pyridine-3-carbaldehydeYield 14%

Reagents, catalysts & solvents 2

HCID 9811564Bis(dibenzylideneacetone)palladiumCatalystHCID 312751,4-DioxaneSolvent

Conditions

Temperature
90 °C

Procedure

A 100-mL single-neck round-bottomed flask equipped with a magnetic stirrer and a reflux condenser was charged with 2-bromo-4-chloronicotinaldehyde 103a (660 mg, 3.0 mmol), 4,4-dimethyl-7-thia-10-azatricyclo[6.4.0.02,6]dodeca-1(8),2(6)-dien-9-one 106h (665 mg, 3.0 mmol), tris(dibenzylideneacetone)dipalladium(0) (270 mg, 0.3 mmol), XantPhos (340 mg, 0.6 mmol), Cs2CO3 (2.0 g, 6.0 mmol), and 1,4-dioxane (20 mL). After three cycles of vacuum/argon flush, the mixture was heated at 90° C. for 5 h. It was then cooled to room temperature and filtered. The filtrate was concentrated under reduced pressure and the resulting residue was purified by silica-gel column chromatography eluting with dichloromethane to afford 109a as yellow solid (105 mg, 14%). MS: [M+H]+ 361.

Workup

  1. customA 100-mL single-neck round-bottomed flask equipped with a magnetic stirrer and a reflux condenser
  2. customAfter three cycles of vacuum/argon flush
  3. temperatureIt was then cooled to room temperature
  4. filtrationfiltered
  5. concentrationThe filtrate was concentrated under reduced pressure
  6. customthe resulting residue was purified by silica-gel column chromatography
  7. washeluting with dichloromethane

Sources & evidence

ORD record
ord-a75f60f63044447b8b7651168545a8b2
Source dataset
uspto-grants-2014_05
Patent number
US08716274B2

Reaction notes

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