N-Iodosuccinimide → HCID 178520933, compound

HRID 643360Notes

Reaction equation

HRID 643360 reaction equation
[Cl:1][C:2]1[C:3]2[N:4]([C:8]([C@H:11]3[CH2:16][CH2:15][C@H:14]([CH2:17][OH:18])[CH2:13][CH2:12]3)=[N:9][CH:10]=2)[CH:5]=[CH:6][N:7]=1.[I:19]N1C(=O)CCC1=O>CN(C=O)C.C(Cl)Cl>[Cl:1][C:2]1[C:3]2[N:4]([C:8]([C@H:11]3[CH2:12][CH2:13][C@H:14]([CH2:17][OH:18])[CH2:15][CH2:16]3)=[N:9][C:10]=2[I:19])[CH:5]=[CH:6][N:7]=1

Participants

5

Reactant 2

HCID 120273N-IodosuccinimideHCID 178520932HCID 178520932, compound

Product 1

HCID 178520933HCID 178520933, compound

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 6344DichloromethaneSolvent

Procedure

trans-[4-(8-Chloroimidazo[1,5-a]pyrazin-3-yl)cyclohexyl]methanol (18.00 g, 67.74 mmol) and N-iodosuccinimide (19.81 g, 88.06 mmol) in anhydrous DMF (360 mL) were stirred at 60° C. under N2 for 6 h. The reaction was diluted with DCM (600 mL), washed with water and brine, dried over anhydrous Na2SO4 and then concentrated in vacuo. The crude material was purified by a silica gel flash chromatography (eluted with 1:2 EtOAc/DCM to 1:1 EtOAc/DCM) to obtain the desired product as a pale yellow solid; By 1H NMR analysis, the product was contaminated with 0.35 eq. of NIS-impurity. The product was carried onto the next reaction without further purification; MS (ES+): m/z 391.92 (100) [MH+], 393.88 (50) [MH+2], 394.89 (10) [MH+3]; tR(polar-5 min/openlynx) 2.79 min.

Workup

  1. washwashed with water and brine
  2. dry with materialdried over anhydrous Na2SO4
  3. concentrationconcentrated in vacuo
  4. customThe crude material was purified by a silica gel flash chromatography (eluted with 1:2 EtOAc/DCM to 1:1 EtOAc/DCM)

Sources & evidence

ORD record
ord-0e881657e7c34226b52bd5d3057f7bb0
Source dataset
uspto-grants-2010_04
Patent number
US07700594B2

Reaction notes

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