Triethylamine → N-cyano-N'-[2-[[[2-furanyl]methyl]thio]ethyl]-N"-methylguanidine

HRID 426500Notes

Reaction equation

HRID 426500 reaction equation
[C:1]([NH:3][C:4](SC)=[N:5][CH3:6])#[N:2].C(N(CC)CC)C.[O:16]1[CH:20]=[CH:19][CH:18]=[C:17]1[CH2:21][S:22][CH2:23][CH2:24][NH2:25]>CN(C)C=O.CO.[N+]([O-])([O-])=O.[Ag+]>[C:1]([NH:3][C:4]([NH:25][CH2:24][CH2:23][S:22][CH2:21][C:17]1[O:16][CH:20]=[CH:19][CH:18]=1)=[N:5][CH3:6])#[N:2]

Participants

7

Reactant 3

HCID 8471TriethylamineHCID 1111031-Cyano-2,3-dimethylisothioureaHCID 1189702-(Furfurylthio)ethylamine

Product 1

HCID 53954457N-cyano-N'-[2-[[[2-furanyl]methyl]thio]ethyl]-N"-methylguanidineYield 34.7%

Reagents, catalysts & solvents 3

HCID 24470Silver NitrateCatalystHCID 887MethanolSolventHCID 6228DimethylformamideSolvent

Procedure

A solution of silver nitrate (8.25 g) in dimethylformamide (50 ml) was added dropwise to a solution of N-cyano-N'-methylcarbamimidothioic acid, methyl ester (6.1 g), triethylamine (4.8 g) and 2-[[[2-furanyl]methyl]thio]ethanamine (7.8 g) in methanol (150 ml). After 42 hr at 50° the mixture was filtered and the filtrate evaporated. The residue was partitioned between ethyl acetate and water. The organic layers were dried and evaporated to give an oil which yielded crystalline N-cyano-N'-[2-[[[2-furanyl]methyl]thio]ethyl]-N"-methylguanidine (3.9 g) m.p. 78°-82°.

Workup

  1. filtrationAfter 42 hr at 50° the mixture was filtered
  2. customthe filtrate evaporated
  3. customThe residue was partitioned between ethyl acetate and water
  4. customThe organic layers were dried
  5. customevaporated
  6. customto give an oil which

Sources & evidence

ORD record
ord-c598160436c5402ab3dc31b6410b2047
Source dataset
uspto-grants-1979_10
Patent number
US04169855

Reaction notes

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