N-(2-chloro-5-pyridylmethyl)trimethylenediamine → 1-(2-Chloro-5-pyridylmethyl)-2-(nitroimino)tetrahydropyrimidine

HRID 487921Notes

Reaction equation

[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([CH2:8][NH:9][CH2:10][CH2:11][CH2:12][NH2:13])=[CH:4][N:3]=1.[N+:14]([NH:17][C:18](N)=N)([O-:16])=[O:15]>O>[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([CH2:8][N:9]2[CH2:10][CH2:11][CH2:12][NH:13][C:18]2=[N:17][N+:14]([O-:16])=[O:15])=[CH:4][N:3]=1

Participants

Conditions

Temperature: 80 °C

Procedure

A solution composed of N-(2-chloro-5-pyridylmethyl)trimethylenediamine (10 g), nitroguanidine (5.7 g) and water (80 ml) was heated at 80° C. for 3 hours. The reaction mixture was cooled to room temperature, and extracted twice with 50 ml of dichloromethane. Dichloromethane was distilled off from the extracts, and the tarry residue was purified by silica gel column chromatography to give almost colorless 1-(2-chloro-5-pyridylmethyl)-2-(nitroimino)tetrahydropyrimidine (6.1 g).

Workup

temperatureThe reaction mixture was cooled to room temperature
extractionextracted twice with 50 ml of dichloromethane
distillationDichloromethane was distilled off from the extracts
customthe tarry residue was purified by silica gel column chromatography

Sources & evidence

ORD record: ord-79f60045a1cd4e7d858c479a798ff16b
Source dataset: uspto-grants-1994_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US05298507

Reaction notes

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