Toluene → (R)-5-(6-(4-chlorophenyl)-1,4-dimethyl-5,6-dihydro-4H-benzo[b][1,2,4]triazolo[4,3-d][1,4]diazepin-8-yl)pyridin-2(1H)-one

HRID 1485444Notes

Reaction equation

HRID 1485444 reaction equation
Br[C:2]1[CH:3]=[CH:4][C:5]2[N:11]3[C:12]([CH3:15])=[N:13][N:14]=[C:10]3[C@H:9]([CH3:16])[CH2:8][N:7]([C:17]3[CH:22]=[CH:21][C:20]([Cl:23])=[CH:19][CH:18]=3)[C:6]=2[CH:24]=1.CC1(C)C(C)(C)OB([C:33]2[CH:34]=[CH:35][C:36](=[O:39])[NH:37][CH:38]=2)O1.C(=O)([O-])[O-].[Cs+].[Cs+].C1(C)C=CC=CC=1>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.C(O)C>[Cl:23][C:20]1[CH:19]=[CH:18][C:17]([N:7]2[CH2:8][C@@H:9]([CH3:16])[C:10]3=[N:14][N:13]=[C:12]([CH3:15])[N:11]3[C:5]3[CH:4]=[CH:3][C:2]([C:33]4[CH:34]=[CH:35][C:36](=[O:39])[NH:37][CH:38]=4)=[CH:24][C:6]2=3)=[CH:22][CH:21]=1

Participants

9

Reactant 4

HCID 1140TolueneHCID 10796Cesium carbonateHCID 177502535-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-olHCID 70979089(R)-8-bromo-6-(4-chlorophenyl)-1,4-dimethyl-5,6-dihydro-4H-benzo[b][1,2,4]triazolo[4,3-d][1,4]diazepine

Product 1

HCID 70979635(R)-5-(6-(4-chlorophenyl)-1,4-dimethyl-5,6-dihydro-4H-benzo[b][1,2,4]triazolo[4,3-d][1,4]diazepin-8-yl)pyridin-2(1H)-oneYield 48%

Reagents, catalysts & solvents 4

HCID 962WaterCatalystHCID 178418397HCID 178418397, compoundCatalystHCID 702EthanolSolventHCID 962WaterSolvent

Conditions

Temperature
100 °C

Procedure

A mixture of (R)-8-bromo-6-(4-chlorophenyl)-1,4-dimethyl-5,6-dihydro-4H-benzo[b][1,2,4]triazolo[4,3-d][1,4]diazepine (40.2 mg, 0.1 mmol), 5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2(1H)-one (44.2 mg, 0.2 mmol), tetrakis(triphenylphosphine)palladium(0) (12 mg, 0.01 mmol), cesium carbonate (98 mg, 0.3 mmol), toluene (2 mL), ethanol (1 mL) and water (3 drops) was stirred at 100° C. for 16 hours. The mixture was diluted with water (10 mL) and extracted with ethyl acetate (3*20 mL). The combined organic layers were washed with water (3*20 mL), brine (3*20 mL), dried over anhydrous sodium sulfate and filtered. The solvent was evaporated in vacuum, and then the residue was purified by column chromatography (silica gel, dichloromethane/methanol=15:1) to give (R)-5-(6-(4-chlorophenyl)-1,4-dimethyl-5,6-dihydro-4H-benzo[b][1,2,4]triazolo[4,3-d][1,4]diazepin-8-yl)pyridin-2(1H)-one as a white solid (20 mg, 48%).

Workup

  1. extractionextracted with ethyl acetate (3*20 mL)
  2. washThe combined organic layers were washed with water (3*20 mL), brine (3*20 mL)
  3. dry with materialdried over anhydrous sodium sulfate
  4. filtrationfiltered
  5. customThe solvent was evaporated in vacuum
  6. customthe residue was purified by column chromatography (silica gel, dichloromethane/methanol=15:1)

Sources & evidence

ORD record
ord-e19fceddc34749afa85c08f7a75e5fda
Source dataset
uspto-grants-2016_08
Patent number
US09422292B2

Reaction notes

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