Trifluoroacetic acid → 5-(2-Isopropyl-5-isothiocyanato-4-methoxy-phenoxy)-pyrimidine-2,4-diamine

HRID 925173Notes

Reaction equation

HRID 925173 reaction equation
[NH2:1][C:2]1[C:3]([O:20][CH3:21])=[CH:4][C:5]([CH:17]([CH3:19])[CH3:18])=[C:6]([CH:16]=1)[O:7][C:8]1[C:9]([NH2:15])=[N:10][C:11]([NH2:14])=[N:12][CH:13]=1.C(O)(C(F)(F)F)=O.[C:29](Cl)(Cl)=[S:30].[OH-].[Na+]>O>[CH:17]([C:5]1[CH:4]=[C:3]([O:20][CH3:21])[C:2]([N:1]=[C:29]=[S:30])=[CH:16][C:6]=1[O:7][C:8]1[C:9]([NH2:15])=[N:10][C:11]([NH2:14])=[N:12][CH:13]=1)([CH3:19])[CH3:18]

Participants

6

Reactant 4

HCID 6422Trifluoroacetic acidHCID 10040ThiophosgeneHCID 14798Sodium HydroxideHCID 595985735-(5-Amino-2-isopropyl-4-methoxy-phenoxy)-pyrimidine-2,4-diamine

Product 1

HCID 866007245-(2-Isopropyl-5-isothiocyanato-4-methoxy-phenoxy)-pyrimidine-2,4-diamineYield 36%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

To a solution of 5-(5-amino-2-isopropyl-4-methoxy-phenoxy)-pyrimidine-2,4-diamine (0.100 g, 0.4 mmol) in 1 ml H2O and TFA (0.040 g, 0.4 mmol) was added thiophosgene (0.040 g, 0.4 mmol). After 1 h the mixture was neutralized with 2 M NaOH and extracted with CH2Cl2. The combined organics were washed with brine, dried over Na2SO4, filtered and concentrated in vacuo to afford 5-(2-isopropyl-5-isothiocyanato-4-methoxy-phenoxy)-pyrimidine-2,4-diamine (0.042 g, 36%) as brown foam [MH]+=334.

Workup

  1. extractionextracted with CH2Cl2
  2. washThe combined organics were washed with brine
  3. dry with materialdried over Na2SO4
  4. filtrationfiltered
  5. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-08c616ed0feb421990d0a378b67ccea7
Source dataset
uspto-grants-2016_03
Patent number
US09284279B2

Reaction notes

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