Hydrogen Sulfide → HCID 178514163, compound

HRID 1380395Notes

Reaction equation

HRID 1380395 reaction equation
[SH2:1].[C:2]([N:4]=[C:5]1[NH:10][CH2:9][CH2:8][CH2:7][NH:6]1)#[N:3].[OH-].[Na+]>O>[C:2]([N:4]=[C:5]1[NH:10][CH2:9][CH2:8][CH2:7][NH:6]1)(=[S:1])[NH2:3]

Participants

5

Reactant 3

HCID 402Hydrogen SulfideHCID 14798Sodium HydroxideHCID 178512071HCID 178512071, compound

Product 1

HCID 178514163HCID 178514163, compoundYield 94%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Conditions

Temperature
45 °C

Procedure

Hydrogen sulphide is first passed into a solution of 190 g (1.53 mols) of 2-(N-cyanimino)-hexahydropyrimidine (a) in 760 ml of water at 75° C. for 12 hours; and then at 65°-70° C. for another 25-30 hours. (On the second day, some of the precipitate no longer dissolves). The suspension is then warmed to 45° C. and 46 ml of 40% strength NaOH are added. Stirring is continued for 30 minutes and the residue is ground and filtered off with suction. After drying, 228 g (94%) of product are obtained. Melting point=187°-189° C. (decomposition).

Workup

  1. dissolution(On the second day, some of the precipitate no longer dissolves)
  2. waitis continued for 30 minutes
  3. filtrationfiltered off with suction
  4. customAfter drying

Sources & evidence

ORD record
ord-a19177d5f7004b3cb829dd071fc746be
Source dataset
uspto-grants-1986_04
Patent number
US04581453

Reaction notes

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