Boron tribromide → HCID 21252859, compound

HRID 850786Notes

Reaction equation

HRID 850786 reaction equation
[Br:1][C:2]1[CH:14]=[CH:13][C:12]2[C:11]3[C:6]4=[C:7]([C:17](=[O:21])[C:18]([CH3:20])=[CH:19][N:5]4[C:4]=2[CH:3]=1)[CH:8]=[C:9]([O:15]C)[CH:10]=3.B(Br)(Br)Br>C(Cl)Cl>[Br:1][C:2]1[CH:14]=[CH:13][C:12]2[C:11]3[C:6]4=[C:7]([C:17](=[O:21])[C:18]([CH3:20])=[CH:19][N:5]4[C:4]=2[CH:3]=1)[CH:8]=[C:9]([OH:15])[CH:10]=3

Participants

4

Reactant 2

HCID 25134Boron tribromideHCID 21252827HCID 21252827, compound

Product 1

HCID 21252859HCID 21252859, compoundYield 98%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Procedure

9-bromo-2-methoxy-5-methyl-4H-pyrido[3,2,1-jk]carbazole-4-one (1.6 g) produced in Example 113 was suspended in anhydrous methylene chloride (120 ml), and a solution of boron tribromide in methylene chloride (1M, 28 ml) was added dropwise at room temperature. After stirring at room temperature for 3 hours, the reaction mixture was poured into ice water (100 ml) and the crystals precipitated were recovered by filtration. The thus obtained crude crystals were washed with ethanol and ether in succession to obtain the title compound (1.5 g, 98%).

Workup

  1. customthe crystals precipitated
  2. filtrationwere recovered by filtration
  3. customThe thus obtained crude crystals
  4. washwere washed with ethanol and ether in succession

Sources & evidence

ORD record
ord-bfdf023a636d43538ffd2496eba571ad
Source dataset
uspto-grants-2000_01
Patent number
US06018046

Reaction notes

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