Triphenylphosphine → 1,1-dimethylethyl 4-[2-(5-bromo-4-chloro-7H-pyrrolo[2,3-d]pyrimidin-7-yl)ethyl]-1-piperidinecarboxylate

HRID 1910055Notes

Reaction equation

HRID 1910055 reaction equation
[Br:1][C:2]1[C:10]2[C:5]([NH:6][CH:7]=[N:8][C:9]=2[Cl:11])=[N:4][CH:3]=1.O[CH2:13][CH2:14][CH:15]1[CH2:20][CH2:19][N:18]([C:21]([O:23][C:24]([CH3:27])([CH3:26])[CH3:25])=[O:22])[CH2:17][CH2:16]1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.CCOC(/N=N/C(OCC)=O)=O>O1CCCC1>[Br:1][C:2]1[C:10]2[C:9]([Cl:11])=[N:8][CH:7]=[N:6][C:5]=2[N:4]([CH2:13][CH2:14][CH:15]2[CH2:16][CH2:17][N:18]([C:21]([O:23][C:24]([CH3:25])([CH3:27])[CH3:26])=[O:22])[CH2:19][CH2:20]2)[CH:3]=1

Participants

6

Reactant 4

HCID 11776TriphenylphosphineHCID 8541401-(tert-Butoxycarbonyl)-4-(2-hydroxyethyl)piperidineHCID 5462977Diethyl azodicarboxylateHCID 178478408HCID 178478408, compound

Product 1

HCID 866636851,1-dimethylethyl 4-[2-(5-bromo-4-chloro-7H-pyrrolo[2,3-d]pyrimidin-7-yl)ethyl]-1-piperidinecarboxylateYield 85.4%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To 5-bromo-4-chloro-1H-pyrrolo[2,3-d]pyrimidine (200 mg, 0.860 mmol) in Tetrahydrofuran (THF) (10 mL) was added 1,1-dimethylethyl 4-(2-hydroxyethyl)-1-piperidinecarboxylate (592 mg, 2.58 mmol) and polymer bound triphenylphosphine (574 mg, 1.721 mmol) resin. To the mixture was then added dropwise DEAD (0.272 mL, 1.721 mmol). The stir bar was then removed from the reaction and the reaction was then placed on to a horizontal shaker and the reaction was agitated at room temp overnight. The resin was filtered off and the filtrated was concentrated then loaded on to a 10 g Biotage SNAP column and eluded with 0 to 45% EtOAc in Hexane to give 1,1-dimethylethyl 4-[2-(5-bromo-4-chloro-7H-pyrrolo[2,3-d]pyrimidin-7-yl)ethyl]-1-piperidinecarboxylate (326 mg, 85% yield) as a white solid. LC-MS (ES) m/z=443.4 [M+H]+.

Workup

  1. customThe stir bar was then removed from the reaction
  2. filtrationThe resin was filtered off
  3. concentrationthe filtrated was concentrated

Sources & evidence

ORD record
ord-aec943f89f254570bd97fde4d4cd8f23
Source dataset
uspto-grants-2013_12
Patent number
US08598156B2

Reaction notes

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