Imidazole → HCID 178514108, compound

HRID 1252243Notes

Reaction equation

HRID 1252243 reaction equation
[NH:1]1[CH:5]=[CH:4][N:3]=[CH:2]1.[O-:6][C:7]#[N:8].[O-:9][C:10]#[N:11].OC1C=CC(C(C2C=CC(O)=CC=2)(C)C)=CC=1>C(OCC)(=O)C>[NH:1]1[CH:5]=[CH:4][N:3]=[CH:2]1.[O-:6][C:7]#[N:8].[O-:9][C:10]#[N:11]

Participants

4

Reactant 2

HCID 795ImidazoleHCID 178439265HCID 178439265, compound

Product 1

HCID 178514108HCID 178514108, compoundYield 95%

Reagents, catalysts & solvents 1

HCID 8857Ethyl AcetateSolvent2×

Procedure

To a solution of 136 parts of imidazole (2.0 moles) in 408 parts of ethyl acetate, 278 parts of bisphenol A dicyanate (1.0 mole; manufactured by Interez, Louisville, Ky.) in 834 parts of ethyl acetate were added slowly. The reaction temperature was maintained at 60°-65° C. during addition. After the addition, the mixture was stirred for another half hour at 60°-65° C. The batch was cooled down to 30°-35° C. and the precipitates were filtered by suction filtration. The white powder was dried under vacuum at 50°-60° C. M.P.=175°-177° C.; actual yield=95-97%.

Workup

  1. temperatureThe reaction temperature was maintained at 60°-65° C. during addition
  2. additionAfter the addition
  3. temperatureThe batch was cooled down to 30°-35° C.
  4. filtrationthe precipitates were filtered by suction filtration
  5. customThe white powder was dried under vacuum at 50°-60° C

Sources & evidence

ORD record
ord-f57711f145f1443c882c2b24361d8333
Source dataset
uspto-grants-1988_05
Patent number
US04742148

Reaction notes

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