𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Differentiation between 1,2,4,5-tetraoxanes and 1,2,4,5,7,8-hexaoxonanes using 1H and 13C NMR analyses

✍ Scribed by Yuxiang Dong; Jonathan L. Vennerstrom

Publisher
Journal of Heterocyclic Chemistry
Year
2001
Tongue
English
Weight
38 KB
Volume
38
Category
Article
ISSN
0022-152X

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

The proton and carbon resonance spectra of ten pairs of 1,2,4,5‐tetraoxanes and 1,2,4,5,7,8‐hexa‐oxonanes derived from acyclic and cyclic ketones have been recorded. A reliable method for distinguishing between 1,2,4,5‐tetraoxanes and 1,2,4,5,7,8‐hexaoxonanes by inspection of their chemical shifts, signal number, signal shape, and dynamic features has been developed. This method provides a rapid structural assignment of 1,2,4,5‐tetraoxanes and 1,2,4,5,7,8‐hexaoxonanes without using vapor pressure osmometry, isotope labeling or low temperature NMR techniques.

📜 SIMILAR VOLUMES

ChemInform Abstract: Differentiation Bet
ChemInform Abstract: Differentiation Between 1,2,4,5-Tetraoxanes and 1,2,4,5,7,8-Hexaoxonanes Using 1H and 13C NMR Analyses.
✍ Yuxiang Dong; Jonathan L. Vennerstrom 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 32 KB

## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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

Azinoiminophosphorane mediated 4H,8H-1,2
Azinoiminophosphorane mediated 4H,8H-1,2,4-triazolo[1,5-C]-[1,3]oxazepin-4-ones and 5,6-dihydro-7H, 12H-naphtho[2,1-f]-[1,2,4]triazolo[1,5-c][1,3]oxazepin-7-ones synthesis
✍ Kyoung Tae Kim; Chang Hoon Lee; Kee-Jung Lee 📂 Article 📅 2003 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 41 KB 👁 1 views

## Abstract The aza‐Wittig reactions of benzaldehyde‐, acetophenone‐ and benzophenone 1‐[(triphenylphosphor‐anylidene)amino]ethylidenehydrazones (**1**) with 2,3‐furandiones **6** provide a new route to 4__H__,8__H__‐1,2,4‐triazolo[1,5‐__c__][1,3]oxazepin‐4‐ones **14** or 5,6‐dihydro‐7__H__,12__H__

Syntheses of 7-phenyl-5h-thiazolo[5,4-e]
Syntheses of 7-phenyl-5h-thiazolo[5,4-e]pyrrolo[1,2-a][1,4]diazepin-10(9h)one,7-phenyl-5h-thiazolo[5,4-e][1,2,3,4]tetrazolo[5,1-c]-pyrrolo[1,2-a][1,4]diazepine and 7-phenyl-5h-thiazolo[5,4-e]-[1,3,4] triazolo [5,1-c]pyrrolo [1,2-a] [1,4] diazepines
✍ A. Shafiee; M. Shekarchi 📂 Article 📅 2002 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 48 KB 👁 1 views

## Abstract Fused tricyclic 7‐phenyl‐5__H__‐thizolo[5,4‐__e__]pyrrolo[1,2‐__a__][1,4]diazepin‐10(9__H__)one (**10**) was prepared by thermolysis of 2‐phenyl‐4‐(1‐pyrrolylmethyl)thiazole‐5‐carbonyl azide (**9**) in acetic acid. In addition, starting from **10**, 7‐phenyl‐5__H__‐thiazolo [5,4‐__e__][

Azinoiminophosphorane mediated synthesis
Azinoiminophosphorane mediated synthesis of 5H, 7H-1,2,4-triazolo[1,5-c][1,3]benzoxazepin-7-ones and 6H,8H-1,2,4-triazolo-[1,5-c][1,3]oxazepin-6-ones
✍ Chang Hoon Lee; Bong Gyu Kim; Kee-Jung Lee 📂 Article 📅 2002 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 31 KB 👁 1 views

## Abstract The aza‐Wittig reactions of benzophenone‐, acetophenone‐ and benzaldehyde l‐[(triphenylphosphoranyl‐idene)amino]ethylidenehydrazones (4) with phthalic anhydride, 2,3‐dimethylmaleic anhydride and 7‐oxabi‐cyclo[2,2,l]hept‐5‐ene‐2,3‐dicarboxylic anhydride (**5a**) provide a new route to 5_