Methane → Ethyl alpha-nitro-5H-dibenzo[a,d]cycloheptene-5-acetate

HRID 2399631Notes

Reaction equation

HRID 2399631 reaction equation
[CH:1]1[CH:15]=[C:14]2[C:4]([CH:5](O)[C:6]3[C:11]([CH:12]=[CH:13]2)=[CH:10][CH:9]=[CH:8][CH:7]=3)=[CH:3][CH:2]=1.[N+:17]([CH2:20][C:21]([O:23][CH2:24][CH3:25])=[O:22])([O-:19])=[O:18].C(OCC)C.C>CO>[N+:17]([CH:20]([CH:5]1[C:4]2[CH:3]=[CH:2][CH:1]=[CH:15][C:14]=2[CH:13]=[CH:12][C:11]2[CH:10]=[CH:9][CH:8]=[CH:7][C:6]1=2)[C:21]([O:23][CH2:24][CH3:25])=[O:22])([O-:19])=[O:18]

Participants

6

Reactant 4

HCID 297MethaneHCID 3283Diethyl EtherHCID 69379Ethyl nitroacetateHCID 82577Dibenzosuberenol

Product 1

HCID 15290760Ethyl alpha-nitro-5H-dibenzo[a,d]cycloheptene-5-acetateYield 41.3%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Conditions

Temperature
120 °C

Procedure

Dibenzosuberenol (42 g, 0.2 mol) is combined with ethyl nitroacetate (25 mL, 0.23 mol) and the mixture is heated at 120° C. (oil bath) until melted and then kept at 110° C. for 2.5 hours. The oil bath is removed and the cooled reaction mixture is dissolved in 50 mL of methanol and taken up into 350 mL of boiling diethyl ether. The dark solution is treated with charcoal, filtered, and cooled overnight. A precipitate is collected by filtration, washed with hexane, diethyl ether, dried under vacuum at room temperature to give 26.7 g of the title compound; mp 101°-103° C.

Workup

  1. customThe oil bath is removed
  2. customthe cooled reaction mixture
  3. filtrationfiltered
  4. temperaturecooled overnight
  5. filtrationA precipitate is collected by filtration
  6. washwashed with hexane, diethyl ether
  7. customdried under vacuum at room temperature

Sources & evidence

ORD record
ord-a4b21e9486b94578994e5b33f72c5042
Source dataset
uspto-grants-1995_09
Patent number
US05449778

Reaction notes

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