Hydrochloric Acid → N-[(4,6-Dimethoxypyrimidin-2-yl)aminocarbonyl]-2-[5-(methylthio)-1,3,4-oxadiazol-2-yl]benzenemethanesulfonamide

HRID 255820Notes

Reaction equation

HRID 255820 reaction equation
[CH3:1][S:2][C:3]1[O:7][C:6]([C:8]2[CH:13]=[CH:12][CH:11]=[CH:10][C:9]=2[CH2:14][S:15]([NH2:18])(=[O:17])=[O:16])=[N:5][N:4]=1.C1([O:25][C:26](=O)[NH:27][C:28]2[N:33]=[C:32]([O:34][CH3:35])[CH:31]=[C:30]([O:36][CH3:37])[N:29]=2)C=CC=CC=1.N12CCCCC1C=NCCC2.Cl>O1CCOCC1.O>[CH3:35][O:34][C:32]1[CH:31]=[C:30]([O:36][CH3:37])[N:29]=[C:28]([NH:27][C:26]([NH:18][S:15]([CH2:14][C:9]2[CH:10]=[CH:11][CH:12]=[CH:13][C:8]=2[C:6]2[O:7][C:3]([S:2][CH3:1])=[N:4][N:5]=2)(=[O:17])=[O:16])=[O:25])[N:33]=1

Participants

7

Reactant 4

HCID 313Hydrochloric AcidHCID 3141121,5-Diazabicyclo(5,4,0)undec-5-eneHCID 10945667Carbamic acid, N-(4,6-dimethoxy-2-pyrimidinyl)-, phenyl esterHCID 139587772-[5-(Methylthio)-1,3,4-oxadiazol-2-yl]benzenemethanesulfonamide

Product 1

HCID 13958778N-[(4,6-Dimethoxypyrimidin-2-yl)aminocarbonyl]-2-[5-(methylthio)-1,3,4-oxadiazol-2-yl]benzenemethanesulfonamideYield 25.7%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 312751,4-DioxaneSolvent

Procedure

To a solution containing 0.62 g of the sulfonamide prepared in Example 3 contained in 10 ml of p-dioxane was added 0.6 g of phenyl(4,6-dimethoxy pyrimidin-2-yl)carbamate followed by dropwise addition of 0.33 g of 1,5-diazabicyclo[5.4.0]undec-5-ene (DBU). The solution was stirred at room temperature for two hours then diluted with about 100 ml of water. The clear solution was acidified with concentrated hydrochloric acid (red to litmus paper), to give a viscous oil. The oil was triturated by decanting off the aqueous solvent and stirring the oil residue in about 5 ml of acetonitrile. After filtering the suspension, the solid residue was washed with 1×5 ml of warm ethyl acetate to give 0.26 g of the subject compound; m.p. 174°-177° C.

Workup

  1. customto give a viscous oil
  2. customThe oil was triturated
  3. customby decanting off the aqueous solvent
  4. stirringstirring the oil residue in about 5 ml of acetonitrile
  5. filtrationAfter filtering the suspension
  6. washthe solid residue was washed with 1×5 ml of warm ethyl acetate

Sources & evidence

ORD record
ord-445d034cb3f3438baeb175ffb9843ee9
Source dataset
uspto-grants-1987_10
Patent number
US04699649

Reaction notes

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