Diethyl Ether → HCID 15462078, compound

HRID 1108797Notes

Reaction equation

HRID 1108797 reaction equation
[NH2:1][C:2]1[N:6]([C:7]2[C:12]([Cl:13])=[CH:11][C:10]([C:14]([F:17])([F:16])[F:15])=[CH:9][C:8]=2[Cl:18])[N:5]=[C:4]([C:19]#[N:20])[C:3]=1I.C(=O)([O-])O.[Na+].[Br:27][C:28]1[CH:33]=[CH:32][C:31](B(O)O)=[CH:30][CH:29]=1.CCOCC>C1(C)C=CC=CC=1.C(O)C.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.O>[NH2:1][C:2]1[N:6]([C:7]2[C:12]([Cl:13])=[CH:11][C:10]([C:14]([F:17])([F:16])[F:15])=[CH:9][C:8]=2[Cl:18])[N:5]=[C:4]([C:19]#[N:20])[C:3]=1[C:31]1[CH:32]=[CH:33][C:28]([Br:27])=[CH:29][CH:30]=1

Participants

9

Reactant 4

HCID 3283Diethyl EtherHCID 79599(4-Bromophenyl)boronic acidHCID 516892Sodium BicarbonateHCID 154620775-Amino-3-cyano-4-iodo-1-[2,6-dichloro-4-(trifluoromethyl)phenyl]pyrazole

Product 1

HCID 15462078HCID 15462078, compound

Reagents, catalysts & solvents 4

HCID 178418397HCID 178418397, compoundCatalystHCID 702EthanolSolventHCID 962WaterSolventHCID 1140TolueneSolvent

Procedure

To a rapidly stirred solution of 5-amino-3-cyano-1-(2,6-dichloro-4-trifluoromethylphenyl)-4-iodopyrazole (0.25 g) in toluene (2 ml) containing tetrakis(triphenylphosphine)palladium(0) (0.02 g) was added saturated aqueous sodium hydrogen carbonate solution (1 ml) and a solution of 4-bromophenylboronic acid (0.25 g) in ethanol (1 ml). The mixture was heated under reflux for 1 hour, then left at room temperature overnight and then poured into ether (25 ml) and water (25 ml). The organic layer was separated, dried (MgSO4) and evaporated. The residue was taken up the minimum amount of ethyl acetate and purified by column chromatography on silica gel (20 g) eluted with dichloromethane: hexane (1:1). Combination and evaporation of suitable fractions followed by recrystallisation from ether/hexane gave the title compound as an off-white solid, m.p. 242-4° C.

Workup

  1. temperatureThe mixture was heated
  2. temperatureunder reflux for 1 hour
  3. customThe organic layer was separated
  4. dry with materialdried (MgSO4)
  5. customevaporated
  6. custompurified by column chromatography on silica gel (20 g)
  7. washeluted with dichloromethane: hexane (1:1)
  8. customCombination and evaporation of suitable fractions
  9. customfollowed by recrystallisation from ether/hexane

Sources & evidence

ORD record
ord-05e650709b39495e95883024d58d212d
Source dataset
uspto-grants-2000_05
Patent number
US06069157

Reaction notes

Loading…