Dimethylformamide → 1-Bromo-3,6,8-tri(4-methylphenyl)pyrene

HRID 1027320Notes

Reaction equation

HRID 1027320 reaction equation
[CH3:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[C:21]3[C:22]4=[C:23]5[C:18](=[CH:19][CH:20]=3)[CH:17]=[CH:16][C:15]([C:24]3[CH:29]=[CH:28][C:27]([CH3:30])=[CH:26][CH:25]=3)=[C:14]5[CH:13]=[CH:12][C:11]4=[C:10]([C:31]3[CH:36]=[CH:35][C:34]([CH3:37])=[CH:33][CH:32]=3)[CH:9]=2)=[CH:4][CH:3]=1.[Br:38]N1C(=O)CCC1=O.CN(C)C=O>O>[Br:38][C:17]1[C:18]2[C:23]3=[C:22]4[C:21](=[CH:20][CH:19]=2)[C:8]([C:5]2[CH:4]=[CH:3][C:2]([CH3:1])=[CH:7][CH:6]=2)=[CH:9][C:10]([C:31]2[CH:36]=[CH:35][C:34]([CH3:37])=[CH:33][CH:32]=2)=[C:11]4[CH:12]=[CH:13][C:14]3=[C:15]([C:24]2[CH:29]=[CH:28][C:27]([CH3:30])=[CH:26][CH:25]=2)[CH:16]=1

Participants

5

Reactant 3

HCID 6228DimethylformamideHCID 67184N-bromobutanimideHCID 866285911,3,6-Tri(4-methylphenyl)pyrene

Product 1

HCID 866285921-Bromo-3,6,8-tri(4-methylphenyl)pyreneYield 85.7%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

Next, a mixed solution of 1.5 g of 1,3,6-tri(4-methylphenyl)pyrene, 0.68 g of N-bromosuccinimide and 30 ml of dimethylformamide was stirred under a nitrogen gas flow at 60° C. for 6 hours. After cooling to room temperature, 50 ml of water was injected, followed by extraction with 100 ml of dichloromethane. The organic layer was washed twice with 50 ml of water, dried over magnesium sulfate and then evaporated. The resultant concentrate was purified by silica gel column chromatography and then vacuum-dried to obtain 1.5 g of 1-bromo-3,6,8-tri(4-methylphenyl)pyrene as a pale yellow powder.

Workup

  1. extractionfollowed by extraction with 100 ml of dichloromethane
  2. washThe organic layer was washed twice with 50 ml of water
  3. dry with materialdried over magnesium sulfate
  4. customevaporated
  5. concentrationThe resultant concentrate
  6. customwas purified by silica gel column chromatography
  7. customvacuum-dried

Sources & evidence

ORD record
ord-b353cb3c5dad469cb475ed4782b41790
Source dataset
uspto-grants-2014_05
Patent number
US08729530B2

Reaction notes

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