Terephthalaldehyde → HCID 69887961, compound

HRID 2083844Notes

Reaction equation

HRID 2083844 reaction equation
[CH:1]1[C:6]([CH:7]=O)=[CH:5][CH:4]=[C:3]([CH:9]=O)[CH:2]=1.[C:11]([CH2:13][CH2:14][NH:15][NH2:16])#[N:12]>CO>[C:11]([CH2:13][CH2:14][NH:15][N:16]=[CH:9][C:3]1[CH:4]=[CH:5][C:6]([CH:7]=[N:16][NH:15][CH2:14][CH2:13][C:11]#[N:12])=[CH:1][CH:2]=1)#[N:12]

Participants

4

Reactant 2

HCID 12173TerephthalaldehydeHCID 136177(2-Cyanoethyl)hydrazine

Product 1

HCID 69887961HCID 69887961, compound

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Conditions

Temperature
50 °C

Procedure

To a suspension of 102 g terephthaldehyde in 700 ml methanol 129.4 g of 2-cyanoethylhydrazine are added drop-wise within 20 minutes. The temperature increases to about 50° C., and an orange-red solution generally arises. After about 10 minutes further crystallization occurs. Stirring continues for 30 minutes and a precipitate that appears is filtered with suction. After washing with a little cold methanol the precipitate is dried under vacuum. 187 g of beige colored product are produced.

Workup

  1. additionare added drop-wise within 20 minutes
  2. customAfter about 10 minutes further crystallization
  3. filtrationa precipitate that appears is filtered with suction
  4. washAfter washing with a little cold methanol the precipitate
  5. customis dried under vacuum

Sources & evidence

ORD record
ord-36cbbf916d1542eab4aa0b916cc6c6eb
Source dataset
uspto-grants-2004_04
Patent number
US06716257B2

Reaction notes

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