𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Synthesis and complete NMR spectral assignment of thiophene-substituted sulfinyl monomers

✍ Scribed by Anja Henckens; Peter Adriaensens; Jan Gelan; Laurence Lutsen; Dirk Vanderzande

Publisher
John Wiley and Sons
Year
2004
Tongue
English
Weight
147 KB
Volume
42
Category
Article
ISSN
0749-1581

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

This paper describes the synthesis of thiophene‐substituted sulfinyl monomers. It comprises a four‐step reaction by which the thiophene unit is built in via Suzuki coupling. These monomers could be used as building blocks for the preparation of conducting polymers via a new concept: the sulfinyl precursor route i.e. via thiophene substituted poly(p‐phenylenevinylene) precursors. Furthermore, the complete ^1^H and ^13^C NMR signal assignment is presented. In addition to being essential for the characterization of the polymers concerned, it offers useful input information for further improvement of chemical shift prediction software. Furthermore, the T~1C~ relaxation decay times are demonstrated to have the potential of being a fast and robust criterion for the spectral assignment of analogous monomers. Copyright © 2004 John Wiley & Sons, Ltd.

📜 SIMILAR VOLUMES

Complete proton and 13C NMR spectral ass
Complete proton and 13C NMR spectral assignments of pentalongin
✍ Norbert De Kimpe; Luc Van Puyvelde; Jan Schripsema; Cees Erkelens; Robert Verpoo 📂 Article 📅 1993 🏛 John Wiley and Sons 🌐 English ⚖ 177 KB

## Abstract The ^1^H and ^13^C NMR spectra of pentalongin, a physiologically active natural product, were completely assigned. Some previous assignments were revised. All ^13^C^1^H coupling constants, both one‐bond and long‐range, were also measured.

Structural determination and complete NM
Structural determination and complete NMR spectral assignments of a new bufadienolide glycoside
✍ Min Ye; Jian Han; Hongzhu Guo; Dean Guo 📂 Article 📅 2002 🏛 John Wiley and Sons 🌐 English ⚖ 84 KB

## Abstract The structure of a new bufadienolide glycoside, cinobufagin 3‐__O__‐β‐D‐glucoside, was determined by extensive 1D and 2D NMR techniques (^1^H, ^13^C, DEPT, COSY, HSQC, g‐HMBC and NOESY). The complete assignments of the ^13^C and ^1^H spectral data were also carried out. Copyright © 2002

Complete 1H and 13C NMR spectral assignm
Complete 1H and 13C NMR spectral assignment of hydrogenated oxoisoaporphine derivatives
✍ Eduardo Sobarzo-Sánchez; Bruce K. Cassels; Luis Castedo 📂 Article 📅 2003 🏛 John Wiley and Sons 🌐 English ⚖ 94 KB

## Abstract 2,3,8,9,10,11‐Hexahydro‐7__H__‐dibenzo[__de,h__]quinolin‐7‐one, 5‐methoxy‐2,3,8,9,10,11‐hexahydro‐7__H__‐dibenzo[__de,h__]quinolin‐7‐one, 5‐methoxy‐6‐hydroxy‐1,2,3,7a,8,9,10,11,11a,11b‐decahydro‐7__H__‐dibenzo[__de,h__]quinolin‐7‐one, 5‐methoxy‐5,6,8,9,10,11‐hexahydro‐4__H__‐dibenzo[__d

Complete 13C and 1H spectral assignments
Complete 13C and 1H spectral assignments of certain substituted quinoxalinones
✍ Valérie Rampont-Placidi; Benoit Cossec; Marie-Thérèse Brondeau; Pierre Mutzenhar 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 196 KB 👁 1 views

Two tagging reagents using a quinoxalinone Ñuorophore were synthesized and, for the Ðrst time, completely physicochemically characterized. The 1H and 13C spectra were entirely assigned using a combination of two-dimensional gradient enhanced HMQC, HMBC experiments and one-dimensional NOE di †erence

Synthesis and complete assignment of NMR
Synthesis and complete assignment of NMR data of 20 chalcones
✍ Doseok Hwang; Jiye Hyun; Geunhyeong Jo; Dongsoo Koh; Yoongho Lim 📂 Article 📅 2010 🏛 John Wiley and Sons 🌐 English ⚖ 96 KB

## Abstract Chalcones, intermediates in flavonoid biosynthesis, can exhibit antibacterial, antiproliferative, and anti‐inflammatory properties. Chalcones contain two benzene rings and both hydroxylated and methoxylated analogs are frequently produced by hydroxylases and __O__‐methyltransferases in

Complete assignments 1H and 13C NMR spec
Complete assignments 1H and 13C NMR spectral data of four anabaseine derivatives
✍ Eduardo Sobarzo-Sánchez; Julio De la Fuente; Elías Quezada; Luis Castedo 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 English ⚖ 103 KB 👁 1 views

## Abstract The anabaseine derivatives 6‐methoxy‐7‐hydroxy‐1‐(pyridin‐3‐yl)‐3,4‐dihydroisoquinoline, 6,7‐dimethoxy‐1‐(pyridin‐3‐yl)‐1,2,3,4‐tetrahydroisoquinoline and 6,7‐dimethoxy‐1‐(piperidin‐3‐yl)‐1,2,3,4‐tetrahydroisoquino‐ line were prepared either by demethylation with HBr or by reduction wit