Binap, (A+-)- → HCID 58447338, compound

HRID 1803559Notes

Reaction equation

HRID 1803559 reaction equation
Br[C:2]1[CH:3]=[C:4]2[C:9](=[CH:10][CH:11]=1)[C:8](=[O:12])[NH:7][N:6]=[C:5]2[Cl:13].[F:14][CH:15]([F:25])[O:16][C:17]1[CH:18]=[C:19]([CH:22]=[CH:23][CH:24]=1)[CH2:20][NH2:21].C1C=CC(P(C2C(C3C(P(C4C=CC=CC=4)C4C=CC=CC=4)=CC=C4C=3C=CC=C4)=C3C(C=CC=C3)=CC=2)C2C=CC=CC=2)=CC=1.CC([O-])(C)C.[Na+]>CC(N(C)C)=O.CCOC(C)=O.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd]>[Cl:13][C:5]1[C:4]2[C:9](=[CH:10][CH:11]=[C:2]([NH:21][CH2:20][C:19]3[CH:22]=[CH:23][CH:24]=[C:17]([O:16][CH:15]([F:14])[F:25])[CH:18]=3)[CH:3]=2)[C:8](=[O:12])[NH:7][N:6]=1

Participants

8

Reactant 4

HCID 634876Binap, (A+-)-HCID 20633503-(Difluoromethoxy)benzylamineHCID 23676156Sodium t-butoxideHCID 533084876-Bromo-4-chlorophthalazin-1(2H)-one

Product 1

HCID 58447338HCID 58447338, compoundYield 8.4%

Reagents, catalysts & solvents 3

HCID 9811564Bis(dibenzylideneacetone)palladiumCatalystHCID 8857Ethyl AcetateSolventHCID 31374DimethylacetamideSolvent

Procedure

A mixture 6-bromo-4-chloro-2H-phthalazin-1-one (150 mg, 0.578 mmol), 3-(difluoromethoxy)benzylamine (0.074 mL, 0.645 mmol), Pd2(dba)3 (48 mg, 0.052 mmol), rac-BINAP (108 mg, 0.173 mmol) and NaOtBu (139 mg, 1.445 mmol) in DMA (6 mL) was heated at 80° C. for 1.5 h. The mixture was allowed to cool, diluted with EtOAc and washed with water. The organic layer was washed with sat.aq. NaHCO3, brine and dried (Na2SO4). Chromatography on silica (EtOAc/hexanes) afforded 4-chloro-6-(3-difluoromethoxy-benzylamino)-2H-phthalazin-1-one (17 mg) as an off white solid, 1H (400 MHz, CDCl3) δ: 4.32 (s, 2H), 6.36 (t, 1H), 6.77 (d, 1H), 6.90 (t, 2H), 6.99 (s, 1H), 7.08 (d, 1H), 7.21 (t, 1H), 8.00 (d, 1H), 10.15 (s, 1H) ppm; m/z (M+1) 351.92.

Workup

  1. temperatureto cool
  2. washwashed with water
  3. washThe organic layer was washed with sat.aq
  4. dry with materialNaHCO3, brine and dried (Na2SO4)

Sources & evidence

ORD record
ord-26b780aecc60442fa1434e0d01da8163
Source dataset
uspto-grants-2013_01
Patent number
US08349836B2

Reaction notes

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