Dimethyl Disulfide → 2-(4-(1H-1,2,4-triazol-1-yl)benzyl)-5-methyl-3-(methylthio)-7-neopentyl-2H-pyrazolo[3,4-d]pyrimidine-4,6(5H,7H)-dione

HRID 535889Notes

Reaction equation

HRID 535889 reaction equation
[N:1]1([C:6]2[CH:29]=[CH:28][C:9]([CH2:10][N:11]3[CH:19]=[C:18]4[C:13]([N:14]([CH2:23][C:24]([CH3:27])([CH3:26])[CH3:25])[C:15](=[O:22])[N:16]([CH3:21])[C:17]4=[O:20])=[N:12]3)=[CH:8][CH:7]=2)[CH:5]=[N:4][CH:3]=[N:2]1.[CH3:30][S:31]SC.[Li+].C[Si]([N-][Si](C)(C)C)(C)C>C(Cl)Cl.C1COCC1>[N:1]1([C:6]2[CH:29]=[CH:28][C:9]([CH2:10][N:11]3[C:19]([S:31][CH3:30])=[C:18]4[C:13]([N:14]([CH2:23][C:24]([CH3:26])([CH3:25])[CH3:27])[C:15](=[O:22])[N:16]([CH3:21])[C:17]4=[O:20])=[N:12]3)=[CH:8][CH:7]=2)[CH:5]=[N:4][CH:3]=[N:2]1

Participants

6

Reactant 3

HCID 12232Dimethyl DisulfideHCID 2733832Lithium HexamethyldisilazideHCID 667661342-(4-(1H-1,2,4-triazol-1-yl)benzyl)-5-methyl-7-neopentyl-2H-pyrazolo[3,4-d]pyrimidine-4,6(5H,7H)-dione

Product 1

HCID 462094022-(4-(1H-1,2,4-triazol-1-yl)benzyl)-5-methyl-3-(methylthio)-7-neopentyl-2H-pyrazolo[3,4-d]pyrimidine-4,6(5H,7H)-dione

Reagents, catalysts & solvents 2

HCID 6344DichloromethaneSolventHCID 8028TetrahydrofuranSolvent

Procedure

2-(4-(1H-1,2,4-triazol-1-yl)benzyl)-5-methyl-7-neopentyl-2H-pyrazolo[3,4-d]pyrimidine-4,6(5H,7H)-dione (52 mg, 0.132 mmol) and methyl disulfide (12 μL, 0.13 mmol) are dissolved in 2 mL of anhydrous CH2Cl2, and then 1.0 M LiHMDS (190 μL, 0.19 mmol) in THF is added dropwise. The reaction mixture is stirred at room temperature for 30 min, and then quenched with saturated ammonium chloride aqueous solution. After routine workup, the obtained crude product is purified by silica gel column chromatography to give pure product as off-white solids. MS (ESI) m/z 440.2 [M+H]+.

Workup

  1. customquenched with saturated ammonium chloride aqueous solution
  2. customAfter routine workup, the obtained crude product
  3. customis purified by silica gel column chromatography
  4. customto give pure product as off-white solids

Sources & evidence

ORD record
ord-abbbf64941ff4d9fb3617660a8270c26
Source dataset
uspto-grants-2014_10
Patent number
US08859564B2

Reaction notes

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