Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | 4-Nitrophenol | HCID 980 | — |
| Reactant | Dicyclohexylcarbodiimide | HCID 10868 | — |
| Reactant | HCID 12769072 | HCID 12769072 | — |
| Solvent | Ethyl Acetate | HCID 8857 | — |
| Product | HCID 12769077 | HCID 12769077 | 72.7% |
Reaction Steps
N-[2-[(Acetylthio)methyl]-4-methyl-1-oxopentyl]glycine (0.5 g) is dissolved in 30 ml of ethyl acetate along with p-nitrophenol (0.2 g). This solution is cooled to 5° C., N,N'-dicyclohexylcarbodiimide (0.4 g) is added portionwise and the reaction mixture is stirred at 5° for about 16 hours. The dicyclohexyl urea is filtered off and the filtrate is concentrated thoroughly in vacuo. Isopropyl ether is added to the residue and allowed to sit for about 16 hours. The crystalline solid is filtered to yield 0.4 g of product, melting point 95°-100° C.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US04297275 |
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| Source dataset | uspto-grants-1981_10 |
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| ORD ID | ord-4ff5f6ce19d44d26bab42629294b0bd9 |
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| Source note | uspto-grants-1981_10 |
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