Dichloromethane → HCID 66662067, compound

HRID 504286Notes

Reaction equation

HRID 504286 reaction equation
Br[C:2]1[CH:7]=[CH:6][C:5]([C:8]2([C:11]([O:13][C:14]([CH3:17])([CH3:16])[CH3:15])=[O:12])[CH2:10][CH2:9]2)=[CH:4][CH:3]=1.[NH:18]1[CH2:22][CH2:21][CH2:20][CH2:19]1.CCC([O-])(C)C.[Na+].ClCCl>C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2].C1(P(C2C=CC=CC=2)[C-]2C=CC=C2)C=CC=CC=1.[C-]1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=C1.[Fe+2].C1(C)C=CC=CC=1>[N:18]1([C:2]2[CH:7]=[CH:6][C:5]([C:8]3([C:11]([O:13][C:14]([CH3:17])([CH3:16])[CH3:15])=[O:12])[CH2:10][CH2:9]3)=[CH:4][CH:3]=2)[CH2:22][CH2:21][CH2:20][CH2:19]1

Participants

8

Reactant 4

HCID 6344DichloromethaneHCID 31268PyrrolidineHCID 2733478Sodium 2-methylbutan-2-olateHCID 66661920Tert-butyl 1-(4-bromophenyl)cyclopropanecarboxylate

Product 1

HCID 66662067HCID 66662067, compound

Reagents, catalysts & solvents 3

HCID 635956Ferrocene-1,1'-bis-(diphenylphosphine)CatalystHCID 178418228Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)CatalystHCID 1140TolueneSolvent

Conditions

Temperature
100 °C

Procedure

A mixture of tert-butyl 1-(4-bromophenyl)cyclopropanecarboxylate (297.1 mg, 1.0 mmol), pyrrolidine (100.0 μL, 1.2 mmol), sodium tert-pentoxide (154.2 mg, 1.40 mmol), [1,1′-bis(diphenylphosphino)ferrocene]dichloropalladium(II), complex with dichloromethane (1:1) (24.5 mg, 0.030 mmol) and 1,1′-bis(diphenylphosphino)ferrocene (16.6 mg, 0.030 mmol) was deaerated under vacuum and then charged with nitrogen. To the mixture was added toluene (2.0 mL). The resulting mixture was heated at 100° C. for overnight. After cooling, the mixture was poured into ice-water and the resulting mixture was extracted with ethyl acetate (4×10 mL) The combined organic phase was washed with water and brine, then dried over Na2SO4, then filtered, and then concentrated under reduced pressure. The residue was purified by flash chromatography with ethyl acetate/hexane to afford tert-butyl 1-(4-pyrrolidin-1-ylphenyl)cyclopropanecarboxylate.

Workup

  1. additioncharged with nitrogen
  2. temperatureAfter cooling
  3. extractionthe resulting mixture was extracted with ethyl acetate (4×10 mL) The combined organic phase
  4. washwas washed with water and brine
  5. dry with materialdried over Na2SO4
  6. filtrationfiltered
  7. concentrationconcentrated under reduced pressure
  8. customThe residue was purified by flash chromatography with ethyl acetate/hexane

Sources & evidence

ORD record
ord-a9b5b485ef104b8ab077eea1fcaf1d0b
Source dataset
uspto-grants-2010_08
Patent number
US07776874B2

Reaction notes

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