Cesium carbonate → {[3-(3,4-dimethoxybenzyl)-1-(1,1-dioxidotetrahydro-2H-thiopyran-4-yl)-2,4-dioxo-1,2,3,4-tetrahydroquinazolin-6-yl]oxy}acetonitrile

HRID 1022514Notes

Reaction equation

HRID 1022514 reaction equation
[CH3:1][O:2][C:3]1[CH:4]=[C:5]([CH:28]=[CH:29][C:30]=1[O:31][CH3:32])[CH2:6][N:7]1[C:16](=[O:17])[C:15]2[C:10](=[CH:11][CH:12]=[C:13]([OH:18])[CH:14]=2)[N:9]([CH:19]2[CH2:24][CH2:23][S:22](=[O:26])(=[O:25])[CH2:21][CH2:20]2)[C:8]1=[O:27].Br[CH2:34][C:35]#[N:36].C([O-])([O-])=O.[Cs+].[Cs+]>CN(C=O)C>[CH3:1][O:2][C:3]1[CH:4]=[C:5]([CH:28]=[CH:29][C:30]=1[O:31][CH3:32])[CH2:6][N:7]1[C:16](=[O:17])[C:15]2[C:10](=[CH:11][CH:12]=[C:13]([O:18][CH2:34][C:35]#[N:36])[CH:14]=2)[N:9]([CH:19]2[CH2:20][CH2:21][S:22](=[O:26])(=[O:25])[CH2:23][CH2:24]2)[C:8]1=[O:27]

Participants

5

Reactant 3

HCID 10796Cesium carbonateHCID 11534BromoacetonitrileHCID 667326983-(3,4-dimethoxybenzyl)-1-(1,1-dioxidotetrahydro-2H-thiopyran-4-yl)-6-hydroxyquinazoline-2,4(1H,3H)-dione

Product 1

HCID 49764282{[3-(3,4-dimethoxybenzyl)-1-(1,1-dioxidotetrahydro-2H-thiopyran-4-yl)-2,4-dioxo-1,2,3,4-tetrahydroquinazolin-6-yl]oxy}acetonitrileYield 72.1%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

A mixture of 0.055 g of the compound obtained in Step 18.2, 0.017 g of bromoacetonitrile and 0.078 g of Cs2CO3 in 2 ml of DMF is irradiated in a microwave field for 15 minutes at 100° C. The reaction mixture is evaporated under reduced pressure. The residue is taken up in DCM, washed with water, dried over Na2SO4 and filtered, and the filtrate is evaporated under reduced pressure. The residue is chromatographed on silica gel, eluting with an MeOH/DCM mixture from (0.5/99.5, v/v) to (5/95, v/v), to give 0.043 g of the expected product.

Workup

  1. customis irradiated in a microwave field for 15 minutes at 100° C
  2. customThe reaction mixture is evaporated under reduced pressure
  3. washwashed with water
  4. dry with materialdried over Na2SO4
  5. filtrationfiltered
  6. customthe filtrate is evaporated under reduced pressure
  7. customThe residue is chromatographed on silica gel
  8. washeluting with an MeOH/DCM mixture from (0.5/99.5

Sources & evidence

ORD record
ord-3d0d3137c00342a9bdab733d57de377f
Source dataset
uspto-grants-2014_05
Patent number
US08722659B2

Reaction notes

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