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- W1468522046 abstract "This chapter focuses on chemical synthesis of Δ-Pyrroline-5-carboxylate. γ,γ-Dicarbethoxy-γ-acetamidobutyraldehyde is hydrolyzed with HCl to glutamic-y-semialdehyde which cyclizes to Δ-pyrroline-5-carboxylic acid. The product is purified by elution from a column of Dowex 50 ion-exchange resin. Δ-Pyrroline-5-carboxylic acid as prepared above is about 80% pure. The contaminant(s) is unknown. The compound has been kept cold in a desiccator for periods up to a year with some deterioration. The purest products are slightly hygroscopic, and manipulations with the solid should be conducted rapidly. Less pure products which manifest yellowish or greenish tinges are extremely hygroscopic, and it is almost impossible to manipulate them in the solid state. Solutions of Δ-pyrroline-5-carboxylic acid are most stable just above the freezing point. Preparations maintained frozen or at room temperature deteriorate rapidly. Δ-Pyrroline-5-carboxylic acid reacts with ninhydrin to give different products according to the conditions used. In glacial acetic acid, the ninhydrin reaction product appears to be the same as that obtained with proline." @default.
- W1468522046 created "2016-06-24" @default.
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- W1468522046 date "1971-01-01" @default.
- W1468522046 modified "2023-10-17" @default.
- W1468522046 title "[174b] Chemical synthesis of Δ1-pyrroline-5-carboxylate" @default.
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- W1468522046 doi "https://doi.org/10.1016/0076-6879(71)17050-4" @default.
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