Methanesulfonic Acid → HCID 86722830, compound

HRID 1778720Notes

Reaction equation

HRID 1778720 reaction equation
[Cl:1][C:2]1[C:7]([O:8][CH3:9])=[CH:6][C:5]([O:10][CH3:11])=[C:4]([Cl:12])[C:3]=1[C:13]1[N:18]=[CH:17][C:16]2[C:19]([I:22])=[N:20][NH:21][C:15]=2[CH:14]=1.[O:23]1[CH:28]=[CH:27][CH2:26][CH2:25][CH2:24]1.CS(O)(=O)=O>C(Cl)Cl.O1CCCC1>[Cl:12][C:4]1[C:5]([O:10][CH3:11])=[CH:6][C:7]([O:8][CH3:9])=[C:2]([Cl:1])[C:3]=1[C:13]1[N:18]=[CH:17][C:16]2[C:19]([I:22])=[N:20][N:21]([CH:24]3[CH2:25][CH2:26][CH2:27][CH2:28][O:23]3)[C:15]=2[CH:14]=1

Participants

6

Reactant 3

HCID 6395Methanesulfonic AcidHCID 80803,4-dihydro-2H-pyranHCID 1784934546-(2,6-dichloro-3,5-dimethoxyphenyl)-3-iodo-1H-pyrazolo[4,3-c]pyridine

Product 1

HCID 86722830HCID 86722830, compoundYield 64%

Reagents, catalysts & solvents 2

HCID 6344DichloromethaneSolventHCID 8028TetrahydrofuranSolvent

Procedure

A mixture of 6-(2,6-dichloro-3,5-dimethoxyphenyl)-3-iodo-1H-pyrazolo[4,3-c]pyridine (0.45 g, 1.0 mmol) (Example 28, Step 4), dihydropyran (270 μL, 3.0 mmol) and methanesulfonic acid (13 μL, 0.20 mmol) in methylene chloride (9 mL) and tetrahydrofuran (3 mL) in reaction flask was stirred at r.t. overnight. The mixture was concentrated under reduced pressure. The residue was purified by flash chromatography on a silica gel column with ethyl acetate in hexanes (0-50%) to afford the desired product (0.34 g, 64%). LC/MS (M+H)+=534.0.

Workup

  1. customin reaction flask
  2. concentrationThe mixture was concentrated under reduced pressure
  3. customThe residue was purified by flash chromatography on a silica gel column with ethyl acetate in hexanes (0-50%)

Sources & evidence

ORD record
ord-b8214e288d0946b085421e2b4dc9f4ab
Source dataset
uspto-grants-2016_02
Patent number
US09266892B2

Reaction notes

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