Hexachloroethane → 5-chloro-1-isobutyl-6-(4-methoxybenzyl)-3-methyl-1H-pyrrolo[3,4-d]pyrimidine-2,4(3H,6H)-dione

HRID 2205655Notes

Reaction equation

HRID 2205655 reaction equation
[CH2:1]([N:5]1[C:10]2=[CH:11][N:12]([CH2:14][C:15]3[CH:20]=[CH:19][C:18]([O:21][CH3:22])=[CH:17][CH:16]=3)[CH:13]=[C:9]2[C:8](=[O:23])[N:7]([CH3:24])[C:6]1=[O:25])[CH:2]([CH3:4])[CH3:3].[Cl:26]C(Cl)(Cl)C(Cl)(Cl)Cl.[Li+].C[Si]([N-][Si](C)(C)C)(C)C>C1COCC1>[Cl:26][C:13]1[N:12]([CH2:14][C:15]2[CH:20]=[CH:19][C:18]([O:21][CH3:22])=[CH:17][CH:16]=2)[CH:11]=[C:10]2[C:9]=1[C:8](=[O:23])[N:7]([CH3:24])[C:6](=[O:25])[N:5]2[CH2:1][CH:2]([CH3:4])[CH3:3]

Participants

5

Reactant 3

HCID 6214HexachloroethaneHCID 2733832Lithium HexamethyldisilazideHCID 102467011-isobutyl-6-(4-methoxybenzyl)-3-methyl-1H-pyrrolo[3,4-d]pyrimidine-2,4(3H,6H)-dione

Product 1

HCID 674146965-chloro-1-isobutyl-6-(4-methoxybenzyl)-3-methyl-1H-pyrrolo[3,4-d]pyrimidine-2,4(3H,6H)-dioneYield 120.9%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent2×

Procedure

1-isobutyl-6-(4-methoxybenzyl)-3-methyl-1H-pyrrolo[3,4-d]pyrimidine-2,4(3H,6H)-dione (1.88 g, 5.5 mmol) and hexachloroethane (6.5 g, 26.5 mmol) are dissolved in anhydrous THF (3 mL), and then 1.0 M LiHMDS in THF (11 mL, 11 mmol) is added dropwise over 2 hours. The reaction mixture is stirred at room temperature for an hour, and then quenched with saturated ammonium chloride aqueous solution. The mixture is poured into cold water (100 mL), and then extracted with ethyl acetate three times. The combined organic phase is dried with anhydrous sodium sulfate. After filtration, the filtrate is evaporated to dryness to give 2.5 g of crude product as light brown solids, which is used in the next step without further purification. MS (ESI) m/z 376.1 [M+H]+.

Workup

  1. customquenched with saturated ammonium chloride aqueous solution
  2. additionThe mixture is poured into cold water (100 mL)
  3. extractionextracted with ethyl acetate three times
  4. dry with materialThe combined organic phase is dried with anhydrous sodium sulfate
  5. filtrationAfter filtration
  6. customthe filtrate is evaporated to dryness

Sources & evidence

ORD record
ord-80afaa44a971469ebf19dcbb54d6c233
Source dataset
uspto-grants-2016_06
Patent number
US09371327B2

Reaction notes

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