Triethylamine → HCID 22939623, compound

HRID 748476Notes

Reaction equation

HRID 748476 reaction equation
[C:1]([C:3]1[CH:8]=[C:7]([CH2:9][CH2:10][C:11]([O:13][C:14]([CH3:17])([CH3:16])[CH3:15])=[O:12])[CH:6]=[C:5]([C:18]#[N:19])[N:4]=1)#[N:2].[C:20](OC)(=[O:28])[C:21]1[C:22](=[CH:24][CH:25]=[CH:26][CH:27]=1)[SH:23].C(N(CC)CC)C>C1(C)C=CC=CC=1>[C:1]([C:3]1[CH:8]=[C:7]([CH2:9][CH2:10][C:11]([O:13][C:14]([CH3:16])([CH3:15])[CH3:17])=[O:12])[CH:6]=[C:5]([C:18]2[S:23][C:22]3[CH:24]=[CH:25][CH:26]=[CH:27][C:21]=3[C:20](=[O:28])[N:19]=2)[N:4]=1)#[N:2]

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 21009Benzoic acid, 2-mercapto-, methyl esterHCID 22939540HCID 22939540, compound

Product 1

HCID 22939623HCID 22939623, compoundYield 36.5%

Reagents, catalysts & solvents 1

HCID 1140TolueneSolvent

Procedure

tert-Butyl 3-(2,6-dicyano-4-pyridyl)propanoate (1.4 g, 5.5 mmol) and methyl thiosalicylate (1.7 g, 10.1 mmol) were dissolved in toluene (10 ml), and triethylamine (5.0 ml, 35.8 mmol) was added thereto. The mixture was refluxed for 3 hrs. The solvent was evaporated, and the residue was subjected to a silica gel column chromatography. The fractions eluted with ethyl acetate-hexane (2:3, v/v) were collected, concentrated and recrystallized from hexane-tetrahydrofuran to give the titled compound (0.79 g, 36%) as white crystals.

Workup

  1. temperatureThe mixture was refluxed for 3 hrs
  2. customThe solvent was evaporated
  3. washThe fractions eluted with ethyl acetate-hexane (2:3
  4. customv/v) were collected
  5. concentrationconcentrated
  6. customrecrystallized from hexane-tetrahydrofuran

Sources & evidence

ORD record
ord-3d2b8cc38103467eb71d267cc0f4662a
Source dataset
uspto-grants-2008_07
Patent number
US07399759B2

Reaction notes

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