Water → 3-chloro-2-(4-(6-fluoropyridin-2-yl)benzyl)-7-isobutyl-5-methyl-2H-pyrazolo[3,4-d]pyrimidine-4,6(5H,7H)-dione

HRID 57655

Reaction equation

HRID 57655 reaction equation
[F:1][C:2]1[N:7]=[C:6]([C:8]2[CH:30]=[CH:29][C:11]([CH2:12][N:13]3[CH:21]=[C:20]4[C:15]([N:16]([CH2:25][CH:26]([CH3:28])[CH3:27])[C:17](=[O:24])[N:18]([CH3:23])[C:19]4=[O:22])=[N:14]3)=[CH:10][CH:9]=2)[CH:5]=[CH:4][CH:3]=1.[Cl:31]C(Cl)(Cl)C(Cl)(Cl)Cl.[Li+].C[Si]([N-][Si](C)(C)C)(C)C.O>C(Cl)Cl.C1COCC1>[Cl:31][C:21]1[N:13]([CH2:12][C:11]2[CH:29]=[CH:30][C:8]([C:6]3[CH:5]=[CH:4][CH:3]=[C:2]([F:1])[N:7]=3)=[CH:9][CH:10]=2)[N:14]=[C:15]2[C:20]=1[C:19](=[O:22])[N:18]([CH3:23])[C:17](=[O:24])[N:16]2[CH2:25][CH:26]([CH3:28])[CH3:27]

Participants

7

Reactant 4

HCID 962WaterHCID 6214HexachloroethaneHCID 2733832Lithium HexamethyldisilazideHCID 700947202-(4-(6-fluoropyridin-2-yl)benzyl)-7-isobutyl-5-methyl-2H-pyrazolo[3,4-d]pyrimidine-4,6(5H,7H)-dione

Product 1

HCID 700947733-chloro-2-(4-(6-fluoropyridin-2-yl)benzyl)-7-isobutyl-5-methyl-2H-pyrazolo[3,4-d]pyrimidine-4,6(5H,7H)-dioneYield 107%

Reagents, catalysts & solvents 2

HCID 6344DichloromethaneSolventHCID 8028TetrahydrofuranSolvent

Procedure

2-(4-(6-fluoropyridin-2-yl)benzyl)-7-isobutyl-5-methyl-2H-pyrazolo[3,4-d]pyrimidine-4,6(5H,7H)-dione (450 mg, 1.1 mmol) and hexachloroethane (523 mg, 2.2 mmol) are dissolved in 5 mL of methylene chloride, and then 1.0 M LiHMDS (2.2 mL, 2.2 mmol) in THF is added dropwise. After the reaction mixture is stirred at room temperature for 10 min, water is added, and then extracted with methylene chloride three times. The combined organic phase is evaporated to dryness to give 520 mg of crude product as off-white solids, which is used in the next step without further purification. MS (ESI) m/z 442.2 [M+H]+.

Workup

  1. extractionextracted with methylene chloride three times
  2. customThe combined organic phase is evaporated to dryness

Sources & evidence

ORD record
ord-44f8ed79dd3b4c0d9f60cc731de38f25
Source dataset
uspto-grants-2016_09
Patent number
US09434730B2

Linked notes

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