Cesium carbonate → 1-(4,5-dihydro-1H-benzo[d]azepin-3(2H)-yl)-2,2,2-trifluoroethanone

HRID 2041561Notes

Reaction equation

HRID 2041561 reaction equation
Cl[C:2]1[CH:18]=[CH:17][C:5]2[CH2:6][CH2:7][N:8]([C:11](=[O:16])[C:12]([F:15])([F:14])[F:13])[CH2:9][CH2:10][C:4]=2[C:3]=1OS(C(F)(F)F)(=O)=O.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.NCC1C=NC(CCC(C)(C)C)=CC=1.C(=O)([O-])[O-].[Cs+].[Cs+]>C1(C)C=CC=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.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd]>[F:15][C:12]([F:13])([F:14])[C:11]([N:8]1[CH2:7][CH2:6][C:5]2[CH:17]=[CH:18][CH:2]=[CH:3][C:4]=2[CH2:10][CH2:9]1)=[O:16]

Participants

7

Reactant 4

HCID 10796Cesium carbonateHCID 634876Binap, (A+-)-HCID 574477477-Chloro-3-(2,2,2-trifluoroacetyl)-6-trifluoromethylsulfonyloxy-2,3,4,5-tetrahydro-1H-benzo[d]azepineHCID 57656465HCID 57656465, compound

Product 1

HCID 218871391-(4,5-dihydro-1H-benzo[d]azepin-3(2H)-yl)-2,2,2-trifluoroethanoneYield 157.1%

Reagents, catalysts & solvents 2

HCID 9811564Bis(dibenzylideneacetone)palladiumCatalystHCID 1140TolueneSolvent

Conditions

Temperature
100 °C

Procedure

Use a method similar to the General Procedure 5-2 to react 7-chloro-3-(2,2,2-trifluoroacetyl)-6-trifluoromethanesulfonyloxy-2,3,4,5-tetrahydro-1H-benzo[d]azepine (166 mg, 0.39 mmol), tris(dibenzylideneacetone)dipalladium(0) (71 mg, 0.078 mmol), BINAP (103 mg, 0.156 mmol), 3-aminomethyl-6-(3,3-dimethyl-butyl)-pyridine (150 mg, 0.78 mmol) and cesium carbonate (178 mg, 0.546 mmol) in degassed toluene (20 mL). Degas the mixture with vacuum/nitrogen purge and heat to 100° C. for 14 h. Cool the mixture to room temperature, dilute with EtOAc and filter through Celite®. Purify the crude mixture by chromatography on silica gel eluting with hexane and then hexane/EtOAc (19:1, 9:1 and 4:1) to obtain 7-chloro-6,6-(3,3-dimethyl-butyl)-pyridin-3-yl-methylamino]-3-(2,2,2-trifluoroacetyl)-2,3,4,5-tetrahydro-1H-benzo[d]azepine as oil (149 mg, 82%). MS (ES+) m/z: 468 (M+H)+.

Workup

  1. customDegas the mixture with vacuum/nitrogen
  2. custompurge
  3. temperatureCool the mixture to room temperature
  4. additiondilute with EtOAc
  5. filtrationfilter through Celite®
  6. customPurify the crude mixture by chromatography on silica gel eluting with hexane

Sources & evidence

ORD record
ord-4c31abddccb34e1baf762227d0700ea3
Source dataset
uspto-grants-2013_11
Patent number
US08580780B2

Reaction notes

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