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Preparation and NMR spectra of four isomeric diformyl[2.2]paracyclophanes (cyclophanes 66)
Four isomeric dialdehydes 4, readily available from cycloaddition of propiolic aldehyde (2) to 1,2,4,5-hexatetraene (1), were separated by chromatography and recrystallization, and were characterized by their spectroscopic data. The individual isomers can now be easily identified from their (1)H NMR...
| Autores principales: | , , , |
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| Formato: | Texto |
| Lenguaje: | English |
| Publicado: |
Beilstein-Institut
2010
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| Materias: | |
| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2981830/ https://www.ncbi.nlm.nih.gov/pubmed/21085510 http://dx.doi.org/10.3762/bjoc.6.104 |