Hydrochloric Acid → 1,2-Bis(methylsulfonyl)-1,2-dimethylhydrazine

HRID 2372953

Reaction equation

HRID 2372953 reaction equation
Cl.Cl.[CH3:3][NH:4][NH:5][CH3:6].[CH3:7][S:8](Cl)(=[O:10])=[O:9].Cl>>[CH3:7][S:8]([N:4]([CH3:3])[N:5]([S:8]([CH3:7])(=[O:10])=[O:9])[CH3:6])(=[O:10])=[O:9]

Participants

4

Reactant 3

HCID 313Hydrochloric AcidHCID 93801,2-Dimethylhydrazine dihydrochlorideHCID 31297Methanesulfonyl chloride

Product 1

HCID 150448651,2-Bis(methylsulfonyl)-1,2-dimethylhydrazineYield 32.4%

Procedure

1,2-Dimethylhydrazine dihydrochloride (2.6 g, 0.02 mol) was suspended in ice-cold dry pyridine (6 ml) and the mixture was stirred for 10 minutes. Methanesulfonyl chloride (5.0 g, 0.043 mol) was added in portions to this mixture, while maintaining the temperature between 0° and 10° C. After an additional 1 hour of stirring at 0° to 5° C., the reaction mixture was left in a freezer (-10° C.) overnight. The pH of the reaction mixture was adjusted to pH 1 with cold dilute hydrochloric acid. The solid that separated was filtered and recrystallized from ethanol (Norit A) to give 1.4 g (32%) of the title compound: m.p. 168°-169° C.; anal. (C4H12N2O4S2) C,H,N; 1H NMR (CDCl3) δ 3.1 [2s, 12H, 2(CH3SO2NCH3)].

Workup

  1. temperaturewhile maintaining the temperature between 0° and 10° C
  2. stirringAfter an additional 1 hour of stirring at 0° to 5° C.
  3. waitthe reaction mixture was left in a freezer (-10° C.) overnight
  4. customThe solid that separated
  5. filtrationwas filtered
  6. customrecrystallized from ethanol (Norit A)

Sources & evidence

ORD record
ord-b26857c00251469d96a2144a92a29e4c
Source dataset
uspto-grants-1992_03
Patent number
US05101072

Linked notes

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