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Synthesis of 4-alkoxy-Δ3-pyrrolin-2-ones and tetramic acids

✍ Scribed by Kanwarpal S Kochhar; Holly J Carson; Kimberly A Clouser; John W Elling; Lauren A Gramens; Judith L Parry; Helayne L Sherman; Kevin Braat; Harold W Pinnick

Publisher
Elsevier Science
Year
1984
Tongue
French
Weight
172 KB
Volume
25
Category
Article
ISSN
0040-4039

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✦ Synopsis

Acetoacetic ester is converted can be hydrolyzed to give tetramic acids.

The 2,4-pyrrolidinedione nucleus (4)

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NMR spectra of Δ3- and Δ4-pyrrolin-2-one
NMR spectra of Δ3- and Δ4-pyrrolin-2-one
✍ R. Mondelli; V. Bocchi; G. P. Gardini; L. Chierici 📂 Article 📅 1971 🏛 John Wiley and Sons 🌐 English ⚖ 674 KB

## Abstract The spectra of Δ^3^‐ and Δ^4^‐pyrrolin‐2‐one were analysed and the sign of all the coupling constants determined by tickling and triple resonance experiments. A positive allylic interaction (__J__~xz~ in **2**) is reported and four‐bond couplings are discussed in particular. Deuterium e

Photochemical Synthesis of 2-Alkylidene-
Photochemical Synthesis of 2-Alkylidene-4-pyrrolin-3-ones
✍ Ramin Ghaffari-Tabrizi; Paul Margaretha 📂 Article 📅 1982 🏛 John Wiley and Sons 🌐 German ⚖ 145 KB 👁 1 views

## Abstract Irradiation (λ =313 nm) of the 4‐pyrrolin‐3‐ones **1a–1c** in acetone‐, 3‐pentanone‐and cyclopentanone solution affords the title compounds **2**, formally __via__ H‐abstrac‐tion by the excited ketone and recombination of the radical pair formed.