1983
DOI: 10.1002/jlac.198319830103
|View full text |Cite
|
Sign up to set email alerts
|

Synthese von substituierten 2‐Pyrrolidonderivaten

Abstract: Die Darstellung der 2-Pyrrolidondcrivate 6a, b uber die P-Formyldicarbonsaure-diester 4a, b wird beschrieben -ausgehend von l a bLw. 1 b und 2a bzw. 2b; mehrtagiges Stehenlassen von 4a oder 4b fuhrt in Ethanol in Gegenwart von Ammoniumcarbonat zu 5a sowie zu 6a, b, wobei 5b nicht isoliert worden ist. 6 a kann in die lsomeren 7 und 8 getrennt werden. 5a entsteht auch bei der Reaktion von 4a mit Ethanol in Gegenwart von p-Toluolsulfonsaure, welches sich nach 3tagigem Srehenlassen bei Raumtemperatur in Ethanol in… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
1

Citation Types

0
1
0

Year Published

1983
1983
2006
2006

Publication Types

Select...
5

Relationship

1
4

Authors

Journals

citations
Cited by 5 publications
(1 citation statement)
references
References 4 publications
0
1
0
Order By: Relevance
“…Only few reports have been made on the synthesis of similar highly functionalised 5-alkoxy-3-(alkoxycarbonyl)pyrrolidin-2-ones. One synthesis is based on the reaction of g-oxodicarboxylates similar to 7 with ammonium carbonate in ethanol, 33 while another report involves a [3+2] cycloaddition reaction of a 2,2-dimethoxycyclopropanecarboxylate with phenylisocyanate. 34 Interesting to mention is the fact that g-oxodicarboxylates like 7 form the corresponding g-alkoxy-a-alkoxycarbonyl-g-butyrolactones upon prolonged standing 35 or treatment with sodium methoxide.…”
Section: Methodsmentioning
confidence: 99%
“…Only few reports have been made on the synthesis of similar highly functionalised 5-alkoxy-3-(alkoxycarbonyl)pyrrolidin-2-ones. One synthesis is based on the reaction of g-oxodicarboxylates similar to 7 with ammonium carbonate in ethanol, 33 while another report involves a [3+2] cycloaddition reaction of a 2,2-dimethoxycyclopropanecarboxylate with phenylisocyanate. 34 Interesting to mention is the fact that g-oxodicarboxylates like 7 form the corresponding g-alkoxy-a-alkoxycarbonyl-g-butyrolactones upon prolonged standing 35 or treatment with sodium methoxide.…”
Section: Methodsmentioning
confidence: 99%