✦ LIBER ✦

The Regiochemistry of the Cycloaddition of 4-R-Phenacylpyridazinium Ylides to Nonsymmetrical Substituted Olefins

✍ Scribed by Maria D. Caprosu; Ivona Ghe. Olariu; Ionel I. Mangalagiu; Mircea A. Constantinescu; Magda G. Petrovanu

Publisher: John Wiley and Sons
Year: 1999
Tongue: English
Weight: 269 KB
Volume: 1999
Category: Article
ISSN: 1434-193X
DOI: 10.1002/(sici)1099-0690(199912)1999:12<3501::aid-ejoc3501>3.0.co;2-#

No coin nor oath required. For personal study only.

✦ Synopsis

The regiochemistry of the [3+2] cycloaddition reactions regiospecific. Four new tetrahydropyrrolopyridazine heterocycles have been obtained. The structures of the new between 4-R-phenacylpyridazinium ylides and acrylonitrile has been studied. Theoretical and experimental studies have compounds were established by elemental (C,H,N) and spectral analyses (IR, 1 H and 13 C NMR, MS). been performed, both of which show that the reaction is ture. [4] [5] Analysis of these data led to the conclusion that [a] "Al. I. Cuza" University Iasi, and MS). Obviously, the data generated by the elemental Bulevardul Copou, No. 11, RO-6600 Iasi, Romania analysis are compatible with both possible regioisomers.

📜 SIMILAR VOLUMES

Pyrimidium Ylides. Part 11. Regiochemist

Pyrimidium Ylides. Part 11. Regiochemistry of the 1,3-Dipolar Cycloaddition of 4-(2-Furyl)- and 4-(2-Thienyl)-pyrimidinium Ylides to Ethyl Propiolate.

✍ Paula Cristina Iuhas; Florentina Georgescu; Emilian Georgescu; Constantin Draghi 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 28 KB 👁 1 views

1,3-Dipolar Cycloaddition of Azomethine

1,3-Dipolar Cycloaddition of Azomethine Ylides Generated from Ketimines and Difluorocarbene to Symmetrically Substituted Olefins.

✍ M. S. Novikov; A. F. Khlebnikov; R. R. Kostikov 📂 Article 📅 2003 🏛 John Wiley and Sons ⚖ 150 KB 👁 2 views

## Abstract For Abstract see ChemInform Abstract in Full Text.

Regiochemistry of the 1,3-Dipolar Cycloa

Regiochemistry of the 1,3-Dipolar Cycloaddition of Some N-Heterocyclic Cycloimmonium Ylides to Unsymmetrical Alkynes.

✍ Paula Cristina Iuhas; Florentina Georgescu; Emilian Georgescu; Constantin Draghi 📂 Article 📅 2003 🏛 John Wiley and Sons ⚖ 109 KB 👁 1 views

Regiochemistry of the dipolar cycloaddit

Regiochemistry of the dipolar cycloadditions of nitrile oxides to unactivated olefins. Application to the stereoselective elaboration of β-hydroxycarbonyl compounds.

✍ Stephen F. Martin; Brian Dupre 📂 Article 📅 1983 🏛 Elsevier Science 🌐 French ⚖ 243 KB

The structure of the Cycloaddition produ

The structure of the Cycloaddition products of C-(2-thenoyl)-N-arylmethanohydrazonyl bromides to some substituted olefins

✍ Hamdi M. Hassaneen; Hamed A. Ead; Magda A. Abdallah; Hiyam A. H. Nousa; Hiyam A. 📂 Article 📅 1990 🏛 John Wiley and Sons 🌐 English ⚖ 378 KB

## Abstract The cycloaddition of C‐(2‐thenoyl)‐N‐arylnitrilimines 2a, b to acrylic acid derivatives 3‐5, fumaric acid derivatives 9‐10, benzalmalononitrile 14 and N‐arylmaleimides 20 has been studied. Under thermal conditions these 1,3‐dipolar cycloadditions proceed with absolute regio‐chemistry to

ChemInform Abstract: The Synthesis of Su

ChemInform Abstract: The Synthesis of Substituted Pyrrolidines and 2,5-Dihydropyrroles via 1,3-Dipolar Cycloaddition of Nonstabilized Azomethine Ylides.

✍ Alan R. Katritzky; Daming Feng; Yunfeng Fang 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 30 KB 👁 2 views