Stereoselective cycloadditions of (1Z,4R∗,5R∗)-1-arylmethylidene-4-benzoylamino-5-phenylpyrazolidin-3-on-1-azomethine imines to maleimides
✍ Scribed by Lidija Pezdirc; Janez Cerkovnik; Samo Pirc; Branko Stanovnik; Jurij Svete
- Book ID
- 118501441
- Publisher
- Elsevier Science
- Year
- 2007
- Tongue
- French
- Weight
- 363 KB
- Volume
- 63
- Category
- Article
- ISSN
- 0040-4020
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
## Abstract magnified image 1,3‐Dipolar cycloadditions of azomethine imines **3a** and **3b**, available by acid‐catalyzed treatment of 3‐pyrazolidinone **1** with acetone (**2a**) and butyraldehyde (**2b**), respectively, were studied. Reactions of **3a** with DMAD (**4**) afforded a mixture of p
## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable v
The 5,5-dimethylpyrazolidin-3-one (4), prepared from ethyl 3-methylbut-2-enoate (3) and hydrazine hydrate, was treated with various substituted benzaldehydes 5a ± i to give the corresponding (1Z)-1-(arylmethylidene)-5,5-dimethyl-3-oxopyrazolidin-1-ium-2-ide azomethine imines 6a ± i. The 1,3-dipolar