Tert-butyl 3-(((2,3-dihydro(1,4)dioxino(2,3-c)pyridin-7-ylmethyl)(trifluoroacetyl)amino)methyl)piperidine-1-carboxylate → N-(2,3-dihydro(1,4)dioxino(2,3-c)pyridin-7-ylmethyl)-2,2,2-trifluoro-N-(piperidin-3-ylmethyl)acetamide

HRID 1510680Notes

Reaction equation

HRID 1510680 reaction equation
[O:1]1[C:10]2[CH:9]=[C:8]([CH2:11][N:12]([CH2:19][CH:20]3[CH2:25][CH2:24][CH2:23][N:22](C(OC(C)(C)C)=O)[CH2:21]3)[C:13](=[O:18])[C:14]([F:17])([F:16])[F:15])[N:7]=[CH:6][C:5]=2[O:4][CH2:3][CH2:2]1>C(Cl)(Cl)Cl.FC(F)(F)C(O)=O>[O:1]1[C:10]2[CH:9]=[C:8]([CH2:11][N:12]([CH2:19][CH:20]3[CH2:25][CH2:24][CH2:23][NH:22][CH2:21]3)[C:13](=[O:18])[C:14]([F:16])([F:15])[F:17])[N:7]=[CH:6][C:5]=2[O:4][CH2:3][CH2:2]1

Participants

4

Reactant 1

HCID 57815322Tert-butyl 3-(((2,3-dihydro(1,4)dioxino(2,3-c)pyridin-7-ylmethyl)(trifluoroacetyl)amino)methyl)piperidine-1-carboxylate

Product 1

HCID 57815464N-(2,3-dihydro(1,4)dioxino(2,3-c)pyridin-7-ylmethyl)-2,2,2-trifluoro-N-(piperidin-3-ylmethyl)acetamideYield 44.6%

Reagents, catalysts & solvents 2

HCID 6212ChloroformSolventHCID 6422Trifluoroacetic acidSolvent

Procedure

To a solution of 0.43 g of tert-butyl 3-(((2,3-dihydro(1,4)dioxino(2,3-c)pyridin-7-ylmethyl)(trifluoroacetyl)amino)methyl)piperidine-1-carboxylate in 3 mL of chloroform, 3 mL of trifluoroacetic acid was added, and the mixture was stirred at room temperature for 1 hour 40 minutes. The solvent was distilled off under reduced pressure. The resultant residue was charged with chloroform and water, and adjusted to pH 8.0 with an aqueous sodium hydrogen carbonate solution and a 20% aqueous sodium hydroxide solution. The organic layer was separated, and the aqueous layer was extracted with chloroform. The organic layer and the extract were combined, the resultant solution was washed with water and a saturated aqueous sodium chloride solution and dried over anhydrous magnesium sulfate, and the solvent was distilled off under reduced pressure to obtain 0.15 g of N-(2,3-dihydro(1,4)dioxino(2,3-c)pyridin-7-ylmethyl)-2,2,2-trifluoro-N-(piperidin-3-ylmethyl)acetamide as a light yellow oily substance.

Workup

  1. distillationThe solvent was distilled off under reduced pressure
  2. additionThe resultant residue was charged with chloroform and water
  3. customThe organic layer was separated
  4. extractionthe aqueous layer was extracted with chloroform
  5. washthe resultant solution was washed with water
  6. dry with materiala saturated aqueous sodium chloride solution and dried over anhydrous magnesium sulfate
  7. distillationthe solvent was distilled off under reduced pressure

Sources & evidence

ORD record
ord-948537e7f07840fd815d51b37f51f3ad
Source dataset
uspto-grants-2012_07
Patent number
US08211908B2

Reaction notes

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