3-Propargylaminopropionaldehyde → 3-[1-Propargyl-3-(5-cyclopropyl-1,3,4-thiadiazol-2-yl)ureido]propionaldehyde

HRID 1415362Notes

Reaction equation

HRID 1415362 reaction equation
[CH:1]1([C:4]2[S:8][C:7]([N:9]=[C:10]=[O:11])=[N:6][N:5]=2)[CH2:3][CH2:2]1.[CH2:12]([NH:15][CH2:16][CH2:17][CH:18]=[O:19])[C:13]#[CH:14]>C1C=CC=CC=1>[CH2:12]([N:15]([CH2:16][CH2:17][CH:18]=[O:19])[C:10]([NH:9][C:7]1[S:8][C:4]([CH:1]2[CH2:3][CH2:2]2)=[N:5][N:6]=1)=[O:11])[C:13]#[CH:14]

Participants

4

Reactant 2

HCID 214001003-PropargylaminopropionaldehydeHCID 539755145-Cyclopropyl-1,3,4-thiadiazol-2-yl isocyanate

Product 1

HCID 214818913-[1-Propargyl-3-(5-cyclopropyl-1,3,4-thiadiazol-2-yl)ureido]propionaldehyde

Reagents, catalysts & solvents 1

HCID 241BenzeneSolvent2×

Procedure

A mixture of 5-cyclopropyl-1,3,4-thiadiazol-2-yl isocyanate dimer (0.05 mole), the dimethyl acetal of 3-propargylaminopropionaldehyde (0.1 mole) and benzene (60 ml) are charged into a glass reaction vessel equipped with a mechanical stirrer and reflux condenser. The reaction mixture is heated at reflux for a period of about 15 minutes. After this time the mixture is stripped of benzene under reduced pressure to yield a solid product as the residue. The residue is then recrystallized to yield the desired product the dimethyl acetal of 3-[1-propargyl-3-(5-cyclopropyl-1,3,4-thiadiazol-2-yl)ureido]propionaldehyde.

Workup

  1. customequipped with a mechanical stirrer
  2. temperaturereflux condenser
  3. temperatureThe reaction mixture is heated
  4. temperatureat reflux for a period of about 15 minutes
  5. customto yield a solid product as the residue
  6. customThe residue is then recrystallized

Sources & evidence

ORD record
ord-ae6729155cc7448792b286f5034ca7c6
Source dataset
uspto-grants-1977_01
Patent number
US04004912

Reaction notes

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