Methylamine → 2-(Methylamino)-2-oxoethyl 4-{5-[4-(trifluoromethyl)phenyl]-2-pyridyl}-1-piperazinecarboxylate

HRID 2246203Notes

Reaction equation

HRID 2246203 reaction equation
[F:1][C:2]([F:31])([F:30])[C:3]1[CH:8]=[CH:7][C:6]([C:9]2[CH:10]=[CH:11][C:12]([N:15]3[CH2:20][CH2:19][N:18]([C:21]([O:23][CH2:24][C:25]([O:27]CC)=O)=[O:22])[CH2:17][CH2:16]3)=[N:13][CH:14]=2)=[CH:5][CH:4]=1.[CH3:32][NH2:33]>O1CCCC1.ClCCl.CO>[F:1][C:2]([F:31])([F:30])[C:3]1[CH:4]=[CH:5][C:6]([C:9]2[CH:10]=[CH:11][C:12]([N:15]3[CH2:20][CH2:19][N:18]([C:21]([O:23][CH2:24][C:25]([NH:33][CH3:32])=[O:27])=[O:22])[CH2:17][CH2:16]3)=[N:13][CH:14]=2)=[CH:7][CH:8]=1

Participants

6

Reactant 2

HCID 6329MethylamineHCID 602095522-(Ethyloxy)-2-oxoethyl 4-{5-[4-(trifluoromethyl)phenyl]-2-pyridyl}-1-piperazinecarboxylate

Product 1

HCID 587744402-(Methylamino)-2-oxoethyl 4-{5-[4-(trifluoromethyl)phenyl]-2-pyridyl}-1-piperazinecarboxylate

Reagents, catalysts & solvents 3

HCID 887MethanolSolventHCID 6344DichloromethaneSolventHCID 8028TetrahydrofuranSolvent

Procedure

The process is performed according to the procedure described in Example 1 (step 1.4.). Starting with 2.77 g (6.33 mmol) of 2-(ethyloxy)-2-oxoethyl 4-{5-[4-(trifluoromethyl)phenyl]-2-pyridyl}-1-piperazine-carboxylate, obtained in step 4.1., and 15.80 ml (31.67 mmol) of a solution of methylamine (2M) in tetrahydrofuran, and after chromatography on silica gel, eluting with a 97/3 mixture of dichloromethane and methanol, followed by recrystallization from ethyl acetate, 1.69 g of product are obtained in the form of a white solid.

Workup

  1. customobtained in step 4.1
  2. customfollowed by recrystallization from ethyl acetate, 1.69 g of product
  3. customare obtained in the form of a white solid

Sources & evidence

ORD record
ord-abdb6aeeb102443bb3d0676122e3d382
Source dataset
uspto-grants-2010_03
Patent number
US07687503B2

Reaction notes

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