HCID 178522937, compound → HCID 178522938, compound

HRID 1978934Notes

Reaction equation

HRID 1978934 reaction equation
[Cl:1][C:2]1[CH:25]=[CH:24][C:5]([CH2:6][NH:7][C:8]([C:10]2[C:11]([OH:23])=[C:12]3[CH:18]=[C:17]([C:19]#[C:20][CH2:21][OH:22])[S:16][C:13]3=[N:14][CH:15]=2)=[O:9])=[CH:4][CH:3]=1>[Pd].C(Cl)Cl.CO>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([CH2:6][NH:7][C:8]([C:10]2[C:11]([OH:23])=[C:12]3[CH:18]=[C:17]([CH2:19][CH2:20][CH2:21][OH:22])[S:16][C:13]3=[N:14][CH:15]=2)=[O:9])=[CH:24][CH:25]=1

Participants

4

Reactant 1

HCID 178522937HCID 178522937, compound

Product 1

HCID 178522938HCID 178522938, compoundYield 27.4%

Reagents, catalysts & solvents 2

HCID 23938PalladiumCatalyst2×HCID 21226129Dichloromethane methanolSolvent

Procedure

A solution of N-(4-chlorobenzyl)-4-hydroxy-2-(3-hydroxy-1-propynyl)-thieno[2,3-b]pyridine-5-carboxamide (Example No.5) (0.300 g) in 1/1 CH2Cl2/CH3OH (70 mL) is hydrogenated over 10% Pd/C (90 mg) at 35 psi. After 3 h, an additional 90 mg of 10% Pd/C is added, and the solution is hydrogenated at 35 psi for 1 h. The reaction mixture is filtered through a Celite pad, and the filtrate is concentrated in vacuo. The resulting pale orange solid is purified via column chromatography (CH2Cl2:CH3OH; 98:2, 95:5). Fractions homogeneous by TLC are combined and concentrated in vacuo to yield and off-white solid which is recrystallized from ethanol to yield 0.083 g (27%) of the title compound as a white, crystalline solid.

Workup

  1. waitthe solution is hydrogenated at 35 psi for 1 h
  2. filtrationThe reaction mixture is filtered through a Celite pad
  3. concentrationthe filtrate is concentrated in vacuo
  4. customThe resulting pale orange solid is purified via column chromatography (CH2Cl2:CH3OH; 98:2, 95:5)
  5. concentrationconcentrated in vacuo
  6. customto yield
  7. customoff-white solid which is recrystallized from ethanol

Sources & evidence

ORD record
ord-a99f78b9439345e79501c0de3ff77f24
Source dataset
uspto-grants-2001_05
Patent number
US06239142B1

Reaction notes

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