Hydrazinecarboxaldehyde → 3,4-Dihydro-6-(3,4-dimethoxyphenyl)-2-(2-formylhydrazino)-3-methyl-4-(2,4,6-trimethylphenylimino)pyrimidine

HRID 4330

Reaction equation

HRID 4330 reaction equation
Cl[C:2]1[N:7]([CH3:8])[C:6](=[N:9][C:10]2[C:15]([CH3:16])=[CH:14][C:13]([CH3:17])=[CH:12][C:11]=2[CH3:18])[CH:5]=[C:4]([C:19]2[CH:24]=[CH:23][C:22]([O:25][CH3:26])=[C:21]([O:27][CH3:28])[CH:20]=2)[N:3]=1.[CH:29]([NH:31][NH2:32])=[O:30]>C(Cl)(Cl)Cl>[CH3:28][O:27][C:21]1[CH:20]=[C:19]([C:4]2[N:3]=[C:2]([NH:32][NH:31][CH:29]=[O:30])[N:7]([CH3:8])[C:6](=[N:9][C:10]3[C:15]([CH3:16])=[CH:14][C:13]([CH3:17])=[CH:12][C:11]=3[CH3:18])[CH:5]=2)[CH:24]=[CH:23][C:22]=1[O:25][CH3:26]

Participants

4

Reactant 2

HCID 12229HydrazinecarboxaldehydeHCID 201522932-Chloro-3,4-dihydro-6-(3,4-dimethoxyphenyl)-3-methyl-4-(2,4,6-trimethylphenylimino)pyrimidine

Product 1

HCID 201523173,4-Dihydro-6-(3,4-dimethoxyphenyl)-2-(2-formylhydrazino)-3-methyl-4-(2,4,6-trimethylphenylimino)pyrimidineYield 26.4%

Reagents, catalysts & solvents 1

HCID 6212ChloroformSolvent

Procedure

To a suspension of 2-chloro-3,4-dihydro-6-(3,4-dimethoxyphenyl)-3-methyl-4-(2,4,6-trimethylphenylimino)pyrimidine (3.0 g) in chloroform (15 ml) was added formylhydrazine (1.36 g). The mixture was refluxed for 6 hours and cooled to ambient temperature. The resulting precipitates were filtered off and the filtrate was evaporated in vacuo. The residue was chromatographed on silica gel using chloroform to give 3,4-dihydro-6-(3,4-dimethoxyphenyl)-2-(2-formylhydrazino)-3-methyl-4-(2,4,6-trimethylphenylimino)pyrimidine (0.84 g).

Workup

  1. temperatureThe mixture was refluxed for 6 hours
  2. customThe resulting precipitates
  3. filtrationwere filtered off
  4. customthe filtrate was evaporated in vacuo
  5. customThe residue was chromatographed on silica gel

Sources & evidence

ORD record
ord-354ca21a83634760aedd88119171dfa2
Source dataset
uspto-grants-1988_02
Patent number
US04725600

Linked notes

Loading…