Malononitrile → HCID 178509189, compound

HRID 254959Notes

Reaction equation

HRID 254959 reaction equation
IC1C=CC(N[N:9]=[C:10]([C:13]#[N:14])[C:11]#[N:12])=CC=1.[I:15][C:16]1[CH:22]=[CH:21][C:19]([NH2:20])=[CH:18][CH:17]=1.C(#N)CC#N.O.[NH2:29][NH2:30]>>[I:15][C:16]1[CH:22]=[CH:21][C:19]([NH:20][N:9]=[C:10]2[C:11]([NH2:12])=[N:30][N:29]=[C:13]2[NH2:14])=[CH:18][CH:17]=1

Participants

5

Reactant 4

HCID 8010MalononitrileHCID 108934-IodoanilineHCID 24654Hydrazine hydrate (1:1)2×HCID 681317HCID 681317, compound

Product 1

HCID 178509189HCID 178509189, compound

Procedure

4-[(4-iodophenyl)hydrazono]-4H-pyrazole-3,5-diamine was prepared using 148 mg (0.5 mmol) of 2-[(4-iodophenyl)hydrazono]malononitrile, which was derived from 4-iodoaniline (219 mg, 1.0 mmol) and malononitrile (1.5 mmol), and hydrazine hydrate. The hydrazine hydrate was added to the solution at a temperature of 75° C. despite the fact that the starting material had not fully dissolved. The solution cleared briefly and then a precipitate formed. The resulting solid was isolated by filtration, washed with ethanol, and dried to yield 114 mg (70%) of the compound as a yellow solid.

Workup

  1. dissolutionhad not fully dissolved
  2. customa precipitate formed
  3. customThe resulting solid was isolated by filtration
  4. washwashed with ethanol
  5. customdried

Sources & evidence

ORD record
ord-e7452b4e89ce4803962688537bbce43f
Source dataset
uspto-grants-2011_01
Patent number
US07875728B2

Reaction notes

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