𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Dependence of Carbon Chemical Shifts in the 13C NMR Spectra of 5-Hydroxy-1,4-naphthoquinon-4-imines on Position of Tautomeric Equilibrium

✍ Scribed by A. D. Bukhtoyarova; L. V. Ektova; M. M. Shakirov; V. N. Berezhnaya

Book ID
110394888
Publisher
SP MAIK Nauka/Interperiodica
Year
2002
Tongue
English
Weight
44 KB
Volume
38
Category
Article
ISSN
1070-4280

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

Reply to the comment on “novel substitue
Reply to the comment on “novel substituent effects in 1H and 13C NMR spectra of 4- and 4′-substituted N-benzylideneanilines.” problems of 1H chemical shift measurement
✍ Naoki Inamoto; Shozo Masuda; Katsumi Tokumaru; Masayuki Yoshida; Youko Tamura; K 📂 Article 📅 1975 🏛 Elsevier Science 🌐 French ⚖ 207 KB

In recent years, organic chemists have appeared to treat 'H NMR data not cautiously. Before presenting 'H NMR data,' we must overcome the two tedious problems: (1) how to measure a peak position accurately, and (2) how to analyse a signal pattern. In fact, a description such as "8 4.38 (CHOH, t, J =

Complete assignment of the 1H and 13C NM
Complete assignment of the 1H and 13C NMR spectra of 8-hydroxy-7-methoxy-4-methyl-1α,4α,4aα,8β,8aα-tetrahydro-1,4-methanonaphthalen-5(1H)-one
✍ David E. Minter; Alar P. Marchand; Shao-Po Lu 📂 Article 📅 1992 🏛 John Wiley and Sons 🌐 English ⚖ 380 KB

## Abstract Diels–Alder cycloaddition of a mixture of 1‐ and 2‐methylcyclopentadienes (1a and 1b, respectively) to 2‐methoxy‐__p__‐benzoquinone (2) gave a mixture of isomeric __endo__ [4 + 2] cycloadducts (3a–3d). Fractional recrystallization of this product mixture from EtOAc‐hexane gave 6‐methoxy