Benzophenone imine → 6-[(diphenylmethylene)amino-]-1'-pentylspiro[1-benzofuran-3,3'-indol]-2'(1'H)-one

HRID 1259819Notes

Reaction equation

HRID 1259819 reaction equation
Br[C:2]1[CH:7]=[CH:6][C:5]2[C:8]3([CH2:23][O:24][C:4]=2[CH:3]=1)[C:16]1[C:11](=[CH:12][CH:13]=[CH:14][CH:15]=1)[N:10]([CH2:17][CH2:18][CH2:19][CH2:20][CH3:21])[C:9]3=[O:22].[C:25](=[NH:38])([C:32]1[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=1)[C:26]1[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=1.CC(C)([O-])C.[Na+].C1(P(C2C=CC=CC=2)C2C=CC3C(=CC=CC=3)C=2C2C3C(=CC=CC=3)C=CC=2P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>C1(C)C=CC=CC=1.ClCCl.[Pd].[Pd].C(=CC(C=CC1C=CC=CC=1)=O)C1C=CC=CC=1.C(=CC(C=CC1C=CC=CC=1)=O)C1C=CC=CC=1.C(=CC(C=CC1C=CC=CC=1)=O)C1C=CC=CC=1>[C:26]1([C:25](=[N:38][C:2]2[CH:7]=[CH:6][C:5]3[C:8]4([CH2:23][O:24][C:4]=3[CH:3]=2)[C:16]2[C:11](=[CH:12][CH:13]=[CH:14][CH:15]=2)[N:10]([CH2:17][CH2:18][CH2:19][CH2:20][CH3:21])[C:9]4=[O:22])[C:32]2[CH:33]=[CH:34][CH:35]=[CH:36][CH:37]=2)[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=1

Participants

8

Reactant 4

HCID 136809Benzophenone imineHCID 634876Binap, (A+-)-HCID 23676156Sodium t-butoxideHCID 592634366-bromo-1'-pentylspiro[1-benzofuran-3,3'-indol]-2'(1'H)one

Product 1

HCID 866090226-[(diphenylmethylene)amino-]-1'-pentylspiro[1-benzofuran-3,3'-indol]-2'(1'H)-one

Reagents, catalysts & solvents 3

HCID 9832798Tris(dibenzylideneacetone) dipalladiumCatalystHCID 1140TolueneSolventHCID 6344DichloromethaneSolvent

Procedure

To a solution of 6-bromo-1′-pentylspiro[1-benzofuran-3,3′-indol]-2′(1′H)one (0.10 g, 0.26 mmol) in anhydrous toluene (5.00 mL) was added benzophenone imine (0.09 g, 0.52 mmol), sodium t-butoxide (0.03 g, 0.36 mmol), tris(dibenzylideneacetone) dipalladium(0) (0.01 g, 0.07 mmol) and (±)-2,2′-bis(diphenylphosphino)-1,1′-binaphthalene (0.12 g, 0.19 mmol). The reaction mixture was refluxed for 16 h, cooled down to ambient temperature, diluted with dichloromethane (50.0 mL) and filtered through a celite bed. The filtrate was concentrated in vacuo to dryness to give the title compound which was used in next step without purification.

Workup

  1. temperatureThe reaction mixture was refluxed for 16 h
  2. filtrationfiltered through a celite bed
  3. concentrationThe filtrate was concentrated in vacuo to dryness

Sources & evidence

ORD record
ord-04e08231e76f4b70a6e2a4025944ae35
Source dataset
uspto-grants-2013_06
Patent number
US08466188B2

Reaction notes

Loading…