𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Synthesis and complete assignment of the 1H and 13C NMR spectra of 6-substituted and 2,6-disubstituted pyridazin-3(2H)-ones

✍ Scribed by Pedro Besada; Tamara Costas; Noemi Vila; Carla Chessa; Carmen Terán

Publisher
John Wiley and Sons
Year
2011
Tongue
English
Weight
116 KB
Volume
49
Category
Article
ISSN
0749-1581

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Several pyridazin‐3(2__H__)‐one derivatives were synthesized starting from alkyl furans using oxidation with singlet oxygen to give 4‐methoxy or 4‐hydroxybutenolides, key intermediates of the synthetic strategy followed. For all pyridazinones reported, a complete assignment of the ^1^H and ^13^C NMR spectra using one‐ and two‐dimensional NMR spectroscopic methods, which included NOE, DEPT, COSY, HSQC and HMBC experiments, was accomplished. Correlations between the chemical shifts of the heterocyclic ring atoms and substituents at N‐2 and C‐6 were analyzed. Copyright © 2011 John Wiley & Sons, Ltd.

📜 SIMILAR VOLUMES

Synthesis and complete 1H, 13C and 15N N
Synthesis and complete 1H, 13C and 15N NMR assignment of substituted isoxazolo[3,4-d]pyridazin-7(6H)-ones
✍ V. Dal Piaz; A. Graziano; N. Haider; W. Holzer 📂 Article 📅 2005 🏛 John Wiley and Sons 🌐 English ⚖ 128 KB

## Abstract The synthesis and complete assignment of all hydrogen, carbon and nitrogen NMR signals of several new isoxazolo[3,4‐__d__]pyridazin‐7(6__H__)‐ones is reported. The spectroscopic characterization is extended to previously described analogues. Copyright © 2004 John Wiley & Sons, Ltd.

Complete assignment of the 1H, 13C and 1
Complete assignment of the 1H, 13C and 19F NMR spectra of fluoro-substituted 3H-naphthopyrans
✍ Stéphanie Delbaere; Yannick Teral; Christophe Bochu; Mylène Campredon; Gaston Ve 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 112 KB 👁 2 views

The complete assignment of the 1H, 13C and 19F NMR spectra of eight Ñuoro-substituted 3H-naphthopyrans was achieved by the concerted application of homonuclear (1HÈ1H) and heteronuclear (13CÈ1H and 19FÈ1H) correlations.

Complete assignments of the 1H and 13C N
Complete assignments of the 1H and 13C NMR spectra of some fluoro-substituted chromenes
✍ Claude Barberis; Myléne Campredon; Vladimir Lokshin; Gérard Giusti; Robert Faure 📂 Article 📅 1995 🏛 John Wiley and Sons 🌐 English ⚖ 159 KB

## Abstract The total assignment of the ^1^H and ^13^C NMR spectra of four fluoro‐substituted chromenes was deduced from the concerted application of homonuclear correlation (COSY), ^1^H‐detected one‐bond heteronuclear multiple quantum coherence (HMQC) and long‐range (two and three bonds) heteronuc

Complete assignment of the 1H and 13C NM
Complete assignment of the 1H and 13C NMR spectra of thioquinanthrene and isothioquinanthrene
✍ Andrzej Maślankiewicz; Krystian Pluta; Mirosław Wyszomirski; Adolf Gogoll; Maria 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 189 KB 👁 2 views

The proton and carbon chemical shifts and the coupling constants nJ(H,H) and nJ(C,H) of thioquinanthrene and isothioquinanthrene were completely assigned from COSY, HETCOR and INEPT studies. 1998 ( John Wiley & Sons, Ltd.

Complete assignment of the 1H and 13C NM
Complete assignment of the 1H and 13C NMR spectra of norbornene derivatives
✍ Julie Fisher; Michael J. Gradwell 📂 Article 📅 1991 🏛 John Wiley and Sons 🌐 English ⚖ 177 KB 👁 1 views

## Abstract The complete assignment of the ^1^H and ^13^C spectra of 2‐__exo__‐ and 2‐__endo__‐nor‐bornenemethanol is presented. Resonance assignment was achieved using ^1^H–^1^H double resonance, COSY and ^1^H/^13^C correlation spectra. Computer simulations of the H‐2 (__exo__ or __endo__) proton