Triacetoxyperiodinane → (1-benzylpiperidin-3-yl)(5-chloro-1-(triisopropylsilyl)-1H-pyrrolo[2,3-b]pyridin-4-yl)methanone

HRID 2204642Notes

Reaction equation

HRID 2204642 reaction equation
CC(OI1(OC(C)=O)(OC(C)=O)OC(=O)C2C=CC=CC1=2)=O.[CH2:23]([N:30]1[CH2:35][CH2:34][CH2:33][CH:32]([CH:36]([C:38]2[C:43]([Cl:44])=[CH:42][N:41]=[C:40]3[N:45]([Si:48]([CH:55]([CH3:57])[CH3:56])([CH:52]([CH3:54])[CH3:53])[CH:49]([CH3:51])[CH3:50])[CH:46]=[CH:47][C:39]=23)[OH:37])[CH2:31]1)[C:24]1[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1>C(Cl)Cl>[CH2:23]([N:30]1[CH2:35][CH2:34][CH2:33][CH:32]([C:36]([C:38]2[C:43]([Cl:44])=[CH:42][N:41]=[C:40]3[N:45]([Si:48]([CH:52]([CH3:54])[CH3:53])([CH:55]([CH3:57])[CH3:56])[CH:49]([CH3:50])[CH3:51])[CH:46]=[CH:47][C:39]=23)=[O:37])[CH2:31]1)[C:24]1[CH:25]=[CH:26][CH:27]=[CH:28][CH:29]=1

Participants

4

Reactant 2

HCID 159087TriacetoxyperiodinaneHCID 58010130(1-benzylpiperidin-3-yl)(5-chloro-1-(triisopropylsilyl)-1H-pyrrolo[2,3-b]pyridin-4-yl)methanol

Product 1

HCID 58010051(1-benzylpiperidin-3-yl)(5-chloro-1-(triisopropylsilyl)-1H-pyrrolo[2,3-b]pyridin-4-yl)methanoneYield 25%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

Dess-Martin periodinane (14.63 g, 34.5 mmol) was added to a solution of (1-benzylpiperidin-3-yl)(5-chloro-1-(triisopropylsilyl)-1H-pyrrolo[2,3-b]pyridin-4-yl)methanol (5.89 g, 11.5 mmol) in DCM (120 mL) at about 0° C. and the resulting mixture was stirred for about 16 h while warming to ambient temperature. The solvent was removed under reduced pressure and the residue partitioned between saturated aqueous NaHCO3 (150 mL) and EtOAc (200 mL). The organic phase was washed with brine (120 mL) and concentrated under reduced pressure. Purification by silica gel chromatography eluting first with heptane (1 L) and then with 1:7 EtOAc:heptane (1 L) yielded (1-benzylpiperidin-3-yl)(5-chloro-1-(triisopropylsilyl)-1H-pyrrolo[2,3-b]pyridin-4-yl)methanone (1.45 g, 25%) as a yellow oil: LC/MS (Table 2, Method a) Rt=3.24 min; MS m/z: 511 (M+H)+

Workup

  1. customThe solvent was removed under reduced pressure
  2. customthe residue partitioned between saturated aqueous NaHCO3 (150 mL) and EtOAc (200 mL)
  3. washThe organic phase was washed with brine (120 mL)
  4. concentrationconcentrated under reduced pressure
  5. customPurification by silica gel chromatography
  6. washeluting first with heptane (1 L)

Sources & evidence

ORD record
ord-9cd1c09d5c104cbbbe6f2ba4546b6ff9
Source dataset
uspto-grants-2016_06
Patent number
US09365579B2

Reaction notes

Loading…