Water → 5-(5-Iodo-2-isopropyl-4-methoxyphenoxy)pyrimidine-2,4-diamine

HRID 1714850Notes

Reaction equation

HRID 1714850 reaction equation
[CH:1]([C:4]1[CH:18]=[C:17]([O:19][CH3:20])[CH:16]=[CH:15][C:5]=1[O:6][C:7]1[C:8]([NH2:14])=[N:9][C:10]([NH2:13])=[N:11][CH:12]=1)([CH3:3])[CH3:2].[I:21]Cl.O.S(=O)(O)[O-].[Na+]>C(O)(=O)C>[I:21][C:16]1[C:17]([O:19][CH3:20])=[CH:18][C:4]([CH:1]([CH3:3])[CH3:2])=[C:5]([CH:15]=1)[O:6][C:7]1[C:8]([NH2:14])=[N:9][C:10]([NH2:13])=[N:11][CH:12]=1

Participants

6

Reactant 4

HCID 962Water2×HCID 24640Iodine chloride2×HCID 161178165-(4-Methoxy-2-(propan-2-yl)phenoxy)pyrimidine-2,4-diamineHCID 23665763Sodium Bisulfite

Product 1

HCID 159538025-(5-Iodo-2-isopropyl-4-methoxyphenoxy)pyrimidine-2,4-diamineYield 93.4%

Reagents, catalysts & solvents 1

HCID 176Acetic AcidSolvent2×

Procedure

To a solution of 5-(2-isopropyl-4-methoxy-phenoxy)-pyrimidine-2,4-diamine (6.50 g) in mL glacial Acetic acid was added a solution of 9.205 g ICl (iodine monochloride) in 8 mL of acetic acid, with addition carried out at a rate such that the temperature of the resulting mixture did not exceed 24 degrees C. Water (11.0 mL) was added and the resultant mixture was stirred at 25 degrees C. for 42 hours. Excess ICl was decomposed by the addition of aqueous solution of sodium bisulfite (3.5 mL) at a rate such that the temperature of the reaction mixture did not exceed 20 degrees C. Water (40 mL) was added, and the precipitate was collected by filtration and air-dried to give 8.86 g of crude 5-(5-iodo-2-isopropyl-4-methoxy-phenoxy)-pyrimidine-2,4-diamine. A suspension of the crude product in 90 mL water was made basic by addition of 50% NaOH, and the resulting solution was extracted into warm EtOAc. The combined organic layers were filtered and EtOAc was replaced by isopropanol via distillation. To the hot isopropanol solution was added 3.4 mL of 6N HCl and the resultant mixture was cooled slowly to 15 degrees C. Crystals of the resulting HCl salt were isolated by filtration, rinsed with isopropanol, and dried under vacuum at 70 degrees C. to give 6.08 g (58.8%) of 5-(5-iodo-2-isopropyl-4-methoxy-phenoxy)-pyrimidine-2,4-diamine hydrochloride salt, m.p.=262.0-263.0° C., MS (M+H)=401.

Workup

  1. additionwith addition
  2. customdid not exceed 24 degrees C
  3. customdid not exceed 20 degrees C
  4. filtrationthe precipitate was collected by filtration
  5. customair-dried

Sources & evidence

ORD record
ord-ac153b7af8cf47c1977239263c312601
Source dataset
uspto-grants-2010_09
Patent number
US07799796B2

Reaction notes

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