## 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
Complete assignment of the 1H and 13C NMR spectra of four 2-substituted 4a,8a-cis-endo-5,8-methano-4a,5,8,8a-tetrahydronaphthalene-1,4-diones
✍ Scribed by Ivan P. de Arruda Campos; Daisy de B. Rezende; Vittorio Lucchini; Cláudio Di Vitta
- Publisher
- John Wiley and Sons
- Year
- 2002
- Tongue
- English
- Weight
- 82 KB
- Volume
- 41
- Category
- Article
- ISSN
- 0749-1581
- DOI
- 10.1002/mrc.1127
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✦ Synopsis
Abstract
The complete assignment of the ^1^H and ^13^C NMR spectra of the title enediones, bearing as substituents N‐aziridinyl (a novel compound), methoxy, chloro and methylsulfanyl, is reported. Copyright © 2002 John Wiley & Sons, Ltd.
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