Pyridine → (R)-3-(2,2-dimethyl-1,3-dioxolan-4-yl)-N-(3-(2-methylpyridin-3-yloxy)-5-(pyridin-2-ylthio)pyridin-2-yl)-1,2,4-thiadiazol-5-amine

HRID 534121Notes

Reaction equation

HRID 534121 reaction equation
[CH3:1][C:2]1([CH3:15])[O:6][C@H:5]([C:7](Cl)=[N:8]OS(C)(=O)=O)[CH2:4][O:3]1.[S-:16][C:17]#[N:18].[Na+].N1C=CC=CC=1.[CH3:26][C:27]1[C:32]([O:33][C:34]2[C:35]([NH2:47])=[N:36][CH:37]=[C:38]([S:40][C:41]3[CH:46]=[CH:45][CH:44]=[CH:43][N:42]=3)[CH:39]=2)=[CH:31][CH:30]=[CH:29][N:28]=1>O.C(OCC)(=O)C>[CH3:15][C:2]1([CH3:1])[O:6][C@H:5]([C:7]2[N:18]=[C:17]([NH:47][C:35]3[C:34]([O:33][C:32]4[C:27]([CH3:26])=[N:28][CH:29]=[CH:30][CH:31]=4)=[CH:39][C:38]([S:40][C:41]4[CH:46]=[CH:45][CH:44]=[CH:43][N:42]=4)=[CH:37][N:36]=3)[S:16][N:8]=2)[CH2:4][O:3]1

Participants

7

Reactant 4

HCID 1049PyridineHCID 516871Sodium thiocyanateHCID 674857913-(2-Methylpyridin-3-yloxy)-5-(pyridin-2-ylthio)pyridin-2-amineHCID 86644161(S)-2,2-dimethyl-N-(methylsulfonyloxy)-1,3-dioxolane-4-carbimidoyl chloride

Product 1

HCID 68477969(R)-3-(2,2-dimethyl-1,3-dioxolan-4-yl)-N-(3-(2-methylpyridin-3-yloxy)-5-(pyridin-2-ylthio)pyridin-2-yl)-1,2,4-thiadiazol-5-amineYield 77%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
40 °C

Procedure

A flask was charged with (S)-2,2-dimethyl-N-(methylsulfonyloxy)-1,3-dioxolane-4-carbimidoyl chloride (4.5 g, 18 mmol), sodium thiocyanate (1.3 g, 15 mmol), pyridine (3.8 ml, 46 mmol), and ethyl acetate (200 mL). The reaction was stirred and heated at 40° C. for 45 minutes. 3-(2-Methylpyridin-3-yloxy)-5-(pyridin-2-ylthio)pyridin-2-amine (3.2 g, 10 mmol) was added and the reaction was stirred at 70° C. overnight. Water was added and the reaction was extracted with ethyl acetate, dried over sodium sulfate, filtered and concentrated. The residue was purified over silica gel (25 to 100% ethyl acetate in hexanes) to afford (R)-3-(2,2-dimethyl-1,3-dioxolan-4-yl)-N-(3-(2-methylpyridin-3-yloxy)-5-(pyridin-2-ylthio)pyridin-2-yl)-1,2,4-thiadiazol-5-amine (3.8 g, 7.7 mmol, 75% yield).

Workup

  1. stirringthe reaction was stirred at 70° C. overnight
  2. extractionthe reaction was extracted with ethyl acetate
  3. dry with materialdried over sodium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customThe residue was purified over silica gel (25 to 100% ethyl acetate in hexanes)

Sources & evidence

ORD record
ord-7543f4bcf685408280c6ed571d379416
Source dataset
uspto-grants-2014_10
Patent number
US08853409B2

Reaction notes

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