HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 436331Generated: October 28, 2026
Dithionite → N-(beta-ureidoethyl) para-phenylenediamine
https://huagongshe.com/reaction/436331
Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Dithionite | HCID 1086 | — |
| Reactant | Sodium Hydroxide | HCID 14798 | — |
| Reactant | 1-(2-Ureidoethylamino)-4-nitrobenzene | HCID 7342344 | — |
| Product | N-(beta-ureidoethyl) para-phenylenediamine | HCID 53869830 | — |
Reaction Steps
94 g (0.42 mole) of para-[N-(β-ureidoethyl)]amino nitrobenzene is added little by little, while stirring, to 950 cm3 of a 3 N solution of NaOH containing 285 g of technical hydrosulfite, which has first been heated to 60° C. When the addition has been completed the reaction mixture is kept at 70° C until decoloration is complete. The mixture is then filtered, cooled and dried after salting out. The result is 46 g of N-(β-ureidoethyl) para-phenylenediamine which, after recrystallization in isopropyl alcohol, melts at 126°.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US04008272 |
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| Source dataset | uspto-grants-1977_02 |
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| ORD ID | ord-f3cd4e549376429785f051fc6aa95231 |
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| Source note | uspto-grants-1977_02 |
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