Triphenylphosphine → 1-(4-(5-(5-bromo-3-(6,7-dihydro-5H-cyclopenta[b]pyridin-5-yloxy)pyridin-2-ylamino)-1,2,4-thiadiazol-3-yl)piperidin-1-yl)ethanone

HRID 1809648Notes

Reaction equation

HRID 1809648 reaction equation
[Br:1][C:2]1[CH:3]=[C:4]([OH:23])[C:5]([NH:8][C:9]2[S:13][N:12]=[C:11]([CH:14]3[CH2:19][CH2:18][N:17]([C:20](=[O:22])[CH3:21])[CH2:16][CH2:15]3)[N:10]=2)=[N:6][CH:7]=1.[N:24]1[CH:29]=[CH:28][CH:27]=[C:26]2[CH:30](O)[CH2:31][CH2:32][C:25]=12.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.N(C(OC(C)C)=O)=NC(OC(C)C)=O>C1COCC1.O>[Br:1][C:2]1[CH:3]=[C:4]([O:23][CH:30]2[C:26]3[C:25](=[N:24][CH:29]=[CH:28][CH:27]=3)[CH2:32][CH2:31]2)[C:5]([NH:8][C:9]2[S:13][N:12]=[C:11]([CH:14]3[CH2:19][CH2:18][N:17]([C:20](=[O:22])[CH3:21])[CH2:16][CH2:15]3)[N:10]=2)=[N:6][CH:7]=1

Participants

7

Reactant 4

HCID 11776TriphenylphosphineHCID 75555Diisopropyl diazene-1,2-dicarboxylateHCID 510640906,7-Dihydro-5H-cyclopenta[b]pyridin-5-olHCID 674872991-(4-(5-(5-Bromo-3-hydroxypyridin-2-ylamino)-1,2,4-thiadiazol-3-yl)piperidin-1-yl)ethanone

Product 1

HCID 592917161-(4-(5-(5-bromo-3-(6,7-dihydro-5H-cyclopenta[b]pyridin-5-yloxy)pyridin-2-ylamino)-1,2,4-thiadiazol-3-yl)piperidin-1-yl)ethanoneYield 21%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 8028TetrahydrofuranSolvent

Procedure

1-(4-(5-(5-Bromo-3-hydroxypyridin-2-ylamino)-1,2,4-thiadiazol-3-yl)piperidin-1-yl)ethanone (0.083 g, 0.21 mmol), 6,7-dihydro-5H-cyclopenta[b]pyridin-5-ol (0.028 g, 0.21 mmol) and triphenylphosphine (0.057 g, 0.22 mmol) were combined in THF (1 mL) under nitrogen. Diisopropyl azodicarboxylate (0.043 ml, 0.22 mmol) was added in one portion. The reaction stirred at ambient temperature overnight. The solution was diluted with water, extracted with CH2Cl2, dried (Na2SO4), filtered and concentrated. Flash chromatography gave 1-(4-(5-(5-bromo-3-(6,7-dihydro-5H-cyclopenta[b]pyridin-5-yloxy)pyridin-2-ylamino)-1,2,4-thiadiazol-3-yl)piperidin-1-yl)ethanone (0.022 g, 21%); Mass spectrum (apci) m/z=515.0, 517.0 (M+H).

Workup

  1. extractionextracted with CH2Cl2
  2. dry with materialdried (Na2SO4)
  3. filtrationfiltered
  4. concentrationconcentrated

Sources & evidence

ORD record
ord-8708bea236a742d9832f7d74f0c75294
Source dataset
uspto-grants-2013_01
Patent number
US08362037B2

Reaction notes

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