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

HRID 1485455Notes

Reaction equation

HRID 1485455 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]([S:23]([CH3:26])(=[O:25])=[O:24])=[CH:19][CH:18]=3)[C:6]=2[CH:27]=1.CC1(C)C(C)(C)OB([C:36]2[CH:37]=[CH:38][C:39](=[O:42])[NH:40][CH:41]=2)O1.C([O-])([O-])=O.[Cs+].[Cs+]>O1CCOCC1.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>[CH3:15][C:12]1[N:11]2[C:5]3[CH:4]=[CH:3][C:2]([C:36]4[CH:37]=[CH:38][C:39](=[O:42])[NH:40][CH:41]=4)=[CH:27][C:6]=3[N:7]([C:17]3[CH:22]=[CH:21][C:20]([S:23]([CH3:26])(=[O:24])=[O:25])=[CH:19][CH:18]=3)[CH2:8][C@@H:9]([CH3:16])[C:10]2=[N:14][N:13]=1

Participants

7

Reactant 3

HCID 10796Cesium carbonateHCID 177502535-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-olHCID 70979131(R)-8-bromo-1,4-dimethyl-6-(4-(methylsulfonyl)phenyl)-5,6-dihydro-4H-benzo[b][1,2,4]triazolo[4,3-d][1,4]diazepine

Product 1

HCID 70979046(R)-5-(1,4-dimethyl-6-(4-(methylsulfonyl)phenyl)-5,6-dihydro-4H-benzo[b][1,2,4]triazolo[4,3-d][1,4]diazepin-8-yl)pyridin-2(1H)-oneYield 45%

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 962WaterSolventHCID 312751,4-DioxaneSolvent

Conditions

Temperature
130 °C

Procedure

To a solution of (R)-8-bromo-1,4-dimethyl-6-(4-(methylsulfonyl)phenyl)-5,6-dihydro-4H-benzo[b][1,2,4]triazolo[4,3-d][1,4]diazepine (150 mg, 0.34 mmol) in 1,4-dioxane and H2O (10:1, 5 mL) were added 5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2(1H)-one (218.50 mg, 88.95 mmol), Cs2CO3 (218.5 mg, 0.67 mmol) and Tetrakis(triphenylphosphine)palladium(0) (24.5 mg, 0.03 mmol). The mixture was purged with N2 and stirred in the microwave at 130° C. for 20 min. The reaction solution was concentrated and purified by prep-TLC (elute: DCM:CH3OH=15:1) to give (R)-5-(1,4-dimethyl-6-(4-(methylsulfonyl)phenyl)-5,6-dihydro-4H-benzo[b][1,2,4]triazolo[4,3-d][1,4]diazepin-8-yl)pyridin-2(1H)-one (70 mg, 45%).

Workup

  1. customThe mixture was purged with N2
  2. concentrationThe reaction solution was concentrated
  3. custompurified by prep-TLC (elute: DCM:CH3OH=15:1)

Sources & evidence

ORD record
ord-40df64686c434f7cbbcb580c15a8e1c3
Source dataset
uspto-grants-2016_08
Patent number
US09422292B2

Reaction notes

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