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Methanethiol → 1-(1-Methyl-4-pyrazolylmethyl)2-(nitromethylene)tetrahydropyrimidine

HRID 22210
Notes
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Reaction equation

HRID 22210 reaction equation
[CH3:1][N:2]1[CH:6]=[C:5]([CH2:7][NH:8][CH2:9][CH2:10][CH2:11][NH2:12])[CH:4]=[N:3]1.[N+:13]([CH:16]=[C:17](SC)SC)([O-:15])=[O:14].CS>C(O)C>[CH3:1][N:2]1[CH:6]=[C:5]([CH2:7][N:8]2[CH2:9][CH2:10][CH2:11][NH:12][C:17]2=[CH:16][N+:13]([O-:15])=[O:14])[CH:4]=[N:3]1
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 3

HCID 878MethanethiolHCID 836231,1-Bis(methylthio)-2-nitroethyleneHCID 14207161N-(1-methyl-4-pyrazolylmethyl)trimethylenediamine

Product 1

HCID 702490871-(1-Methyl-4-pyrazolylmethyl)2-(nitromethylene)tetrahydropyrimidineYield 70.1%

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

A mixture of 16.8 g of N-(1-methyl-4-pyrazolylmethyl)-trimethylenediamine, 16.5 g of 1-nitro-2,2-bis(methylthio)ethylene and 200 ml of ethanol was heated under reflux until the generation of methylmercaptan ceased. The mixture was cooled, and the precipitated crystals were collected by filtration. Washing with methanol gave 16.6 g of the desired 1-(1-methyl-4-pyrazolylmethyl)2-(nitromethylene)tetrahydropyrimidine as pale yellow crystals.

Workup

  1. temperaturewas heated
  2. temperatureThe mixture was cooled
  3. filtrationthe precipitated crystals were collected by filtration
  4. washWashing with methanol

Sources & evidence

ORD record
ord-2bc2df6bc147415a9b2cca3c9d532670
Source dataset
uspto-grants-1995_06
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US05428032

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes