1,1-Bis(methylthio)-2-nitroethylene → HCID 53964092, compound

HRID 231169Notes

Reaction equation

HRID 231169 reaction equation
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([CH2:8][NH:9][CH2:10][CH2:11][CH2:12][SH:13])=[CH:4][N:3]=1.[N+:14]([CH:17]=[C:18](SC)SC)([O-:16])=[O:15]>C(O)C>[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([CH2:8][N:9]2[CH2:10][CH2:11][CH2:12][S:13][C:18]2=[CH:17][N+:14]([O-:16])=[O:15])=[CH:4][N:3]=1

Participants

4

Reactant 2

HCID 836231,1-Bis(methylthio)-2-nitroethyleneHCID 13752791HCID 13752791, compound

Product 1

HCID 53964092HCID 53964092, compoundYield 22.9%

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

A mixture of N-(2-chloro-5-pyridylmethyl)3-aminopropanethiol (4.3 g), 1-nitro-2,2-bis(methylthio)ethylene (3.3 g) and ethanol (40 ml) was heated under reflux for 10 hours in a stream of nitrogen. After the reaction, about 2/3 of ethanol was distilled off under reduced pressure. Ether was added little by little to the reaction mixture to precipitate crystals. The crystals were collected by filtration, and washed with a mixture of ethanol and ether to give the desired 3-(2-chloro-5-pyridylmethyl)-2-nitromethylenetetrahydro-2H-1,3-thiazine (1.3 g) as yellow crystals.

Workup

  1. temperaturewas heated
  2. temperatureunder reflux for 10 hours in a stream of nitrogen
  3. customAfter the reaction
  4. distillationabout 2/3 of ethanol was distilled off under reduced pressure
  5. additionEther was added little by little to the reaction mixture
  6. customto precipitate crystals
  7. filtrationThe crystals were collected by filtration
  8. washwashed with a mixture of ethanol and ether

Sources & evidence

ORD record
ord-c1ad414edd594143938fb620f2150a75
Source dataset
uspto-grants-1989_07
Patent number
US04845106

Reaction notes

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