2-(3-Cyclopropoxy-4-difluoromethoxyphenyl)-3-ethoxymethyl-1-(2-trimethylsilylethoxymethyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one → 2-(3-Cyclopropoxy-4-difluoromethoxyphenyl)-3-ethoxymethyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one

HRID 2097385Notes

Reaction equation

HRID 2097385 reaction equation
[CH:1]1([O:4][C:5]2[CH:6]=[C:7]([C:15]3[N:24](COCC[Si](C)(C)C)[C:18]4[CH:19]=[N:20][NH:21][C:22](=[O:23])[C:17]=4[C:16]=3[CH2:33][O:34][CH2:35][CH3:36])[CH:8]=[CH:9][C:10]=2[O:11][CH:12]([F:14])[F:13])[CH2:3][CH2:2]1.C1(OC2C=C(C3N(COCC[Si](C)(C)C)C4C=NNC(=O)C=4C=3)C=CC=2OC(F)F)CC1>O>[CH:1]1([O:4][C:5]2[CH:6]=[C:7]([C:15]3[NH:24][C:18]4[CH:19]=[N:20][NH:21][C:22](=[O:23])[C:17]=4[C:16]=3[CH2:33][O:34][CH2:35][CH3:36])[CH:8]=[CH:9][C:10]=2[O:11][CH:12]([F:13])[F:14])[CH2:2][CH2:3]1

Participants

4

Reactant 2

HCID 666022752-(3-Cyclopropoxy-4-difluoromethoxyphenyl)-3-ethoxymethyl-1-(2-trimethylsilylethoxymethyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-oneHCID 666024612-(3-Cyclopropoxy-4-difluoromethoxyphenyl)-1-(2-trimethylsilylethoxymethyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one

Product 1

HCID 1358450162-(3-Cyclopropoxy-4-difluoromethoxyphenyl)-3-ethoxymethyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-oneYield 38%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

Reaction was carried out in the same manner as in Example 1-(b) except for using 184 mg (0.353 mmol) of 2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-ethoxymethyl-1-(2-trimethylsilylethoxymethyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one obtained in Example 12-(a) in place of 2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-1-(2-trimethylsilylethoxymethyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one. After completion of the reaction, water was added to the reaction mixture, and the mixture was extracted with ethyl acetate. The organic layer after separation was washed successively with water and then with a saturated aqueous solution of sodium chloride, dried over anhydrous magnesium sulfate and then concentrated under reduced pressure. To the obtained concentrate was added a small amount of tetrahydrofuran to dissolve the concentrate, hexane was then added thereto, and the mixture was subjected to ultrasonic wave treatment whereby the precipitated solid was collected by filtration. The obtained solid was washed with water and dried under reduced pressure to obtain 52 mg of the title compound as a white solid. (Yield: 38%)

Workup

  1. customReaction
  2. additionwas added to the reaction mixture
  3. extractionthe mixture was extracted with ethyl acetate
  4. customThe organic layer after separation
  5. washwas washed successively with water
  6. dry with materialwith a saturated aqueous solution of sodium chloride, dried over anhydrous magnesium sulfate
  7. concentrationconcentrated under reduced pressure
  8. concentrationTo the obtained concentrate
  9. additionwas added a small amount of tetrahydrofuran
  10. dissolutionto dissolve the concentrate, hexane
  11. additionwas then added
  12. filtrationwas collected by filtration
  13. washThe obtained solid was washed with water
  14. customdried under reduced pressure

Sources & evidence

ORD record
ord-5768b531c95f4fc09fe80f5b674376c0
Source dataset
uspto-grants-2013_05
Patent number
US08450319B2

Reaction notes

Loading…