Hydrochloric Acid → 2-chloro-7-cyclopentyl-7H-pyrrolo[2,3-d]pyrimidine-6-carbaldehyde

HRID 1483086Notes

Reaction equation

HRID 1483086 reaction equation
[Cl:1][C:2]1[N:3]=[CH:4][C:5]2[CH:10]=[C:9]([CH:11](OCC)[O:12]CC)[N:8]([CH:18]3[CH2:22][CH2:21][CH2:20][CH2:19]3)[C:6]=2[N:7]=1.Cl.O.CCCCCCC.C(OCC)(=O)C>O1CCOCC1>[Cl:1][C:2]1[N:3]=[CH:4][C:5]2[CH:10]=[C:9]([CH:11]=[O:12])[N:8]([CH:18]3[CH2:19][CH2:20][CH2:21][CH2:22]3)[C:6]=2[N:7]=1

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 962WaterHCID 21899848Ethylacetate heptaneHCID 58315449HCID 58315449, compound

Product 1

HCID 583154052-chloro-7-cyclopentyl-7H-pyrrolo[2,3-d]pyrimidine-6-carbaldehydeYield 82.9%

Reagents, catalysts & solvents 1

HCID 312751,4-DioxaneSolvent

Procedure

A mixture of 2-chloro-7-cyclopentyl-6-diethoxymethyl-7H-pyrrolo[2,3-d]pyrimidine (4.26 g, 13 mmol) in dioxane is added concentrated HCl. After reaction is completed within 10 min, water is added and then extracted with ethyl acetate. Solvent is removed to give a brown color crude product. Column is run using heptane/ethyl acetate (6:4) to give 2-chloro-7-cyclopentyl-7H-pyrrolo[2,3-d]pyrimidine-6-carbaldehyde (2.69 g, 82%). MS (ESI) m/z 350.4 (M+H)+

Workup

  1. customAfter reaction
  2. extractionextracted with ethyl acetate
  3. customSolvent is removed
  4. customto give a brown color crude product

Sources & evidence

ORD record
ord-d2e7e18f92154dfe8dfd838073ab0351
Source dataset
uspto-grants-2016_08
Patent number
US09416136B2

Reaction notes

Loading…