Diethyl Ether → isopropyl 3-(5-amino-2-chloro-4-fluorophenyl)tetrahydro-5-methyl-2,4,6-trioxo-s-triazine-1(2H)-acetate

HRID 1472

Reaction equation

HRID 1472 reaction equation
[Cl:1][C:2]1[CH:7]=[C:6]([F:8])[C:5]([N+:9]([O-])=O)=[CH:4][C:3]=1[N:12]1[C:17](=[O:18])[N:16]([CH3:19])[C:15](=[O:20])[N:14]([CH2:21][C:22]([O:24][CH:25]([CH3:27])[CH3:26])=[O:23])[C:13]1=[O:28].[H][H].CCOCC>[Pt].C(OCC)(=O)C.C(Cl)Cl>[NH2:9][C:5]1[C:6]([F:8])=[CH:7][C:2]([Cl:1])=[C:3]([N:12]2[C:17](=[O:18])[N:16]([CH3:19])[C:15](=[O:20])[N:14]([CH2:21][C:22]([O:24][CH:25]([CH3:27])[CH3:26])=[O:23])[C:13]2=[O:28])[CH:4]=1

Participants

7

Reactant 3

HCID 3283Diethyl EtherHCID 57195947Isopropyl 3-(2-chloro-4-fluoro-5-nitrophenyl)tetrahydro-5-methyl-2,4,6-trioxo-s-triazine-1(2H)-acetateHCID 178418361HCID 178418361, compound2×

Product 1

HCID 57313385isopropyl 3-(5-amino-2-chloro-4-fluorophenyl)tetrahydro-5-methyl-2,4,6-trioxo-s-triazine-1(2H)-acetate

Reagents, catalysts & solvents 3

HCID 23939PlatinumCatalyst2×HCID 6344DichloromethaneSolventHCID 8857Ethyl AcetateSolvent2×

Procedure

A mixture of isopropyl 3-(2-chloro-4-fluoro-5-nitrophenyl)tetrahydro-5-methyl-2,4,6-trioxo-s-triazine-1(2H)-acetate (34.8 g, 0.0835 mol) and 5% platinum on carbon (3.48 g) in ethyl acetate is hydrogenated until about 90 psi of hydrogen is taken up. The reaction mixture is then filtered and concentrated in vacuo to obtain a foam. Column chromatography of the foam using silica gel and 10% to 20% ether in methylene chloride solutions gives a yellow foam which contains two compounds. A mixture of the foam and 5% platinum on carbon (3.5 g) in ethyl acetate is hydrogenated until 5 psi of hydrogen is taken up. The reaction mixture is then filtered and concentrated in vacuo to give the title product as a yellow foam which is identified by NMR spectral analyses.

Workup

  1. filtrationThe reaction mixture is then filtered
  2. concentrationconcentrated in vacuo
  3. customto obtain a foam
  4. customgives a yellow foam which
  5. filtrationThe reaction mixture is then filtered
  6. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-94f05994d0a745e9988e389fe7fb1fc2
Source dataset
uspto-grants-1998_03
Patent number
US05726126

Linked notes

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