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ChemInform Abstract: Novel (E)- and (Z)-2-Styrylchromones from (E,E)-2′-Hydroxycinnamylideneacetophenones — Xanthones from Daylight Photooxidative Cyclization of (E)-2-Styrylchromones.

✍ Scribed by A. M. S. SILVA; D. C. G. A. PINTO; H. R. TAVARES; J. A. S. CAVALEIRO; M. L. JIMENO; J. ELGUERO

Publisher
John Wiley and Sons
Year
2010
Weight
26 KB
Volume
29
Category
Article
ISSN
0931-7597

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Novel (E)- and (Z)-2-Styrylchromones fro
Novel (E)- and (Z)-2-Styrylchromones from (E, E)-2′-Hydroxycinnamylideneacetophenones – Xanthones from Daylight Photooxidative Cyclization of (E)-2-Styrylchromones
✍ Artur M. S. Silva; Diana C. G. A. Pinto; Hilário R. Tavares; José A. S. Cavaleir 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 402 KB 👁 2 views

E,E)-2Ј-Hydroxycinnamylideneacetophenones / (E)-and (Z)-2-Styrylchromones / Xanthones / Oxidative cyclizations / Configuration determination The oxidative cyclization of (E,E)-2Ј-hydroxycinnamyl-obtained. The stereochemistry of the (E,E)-cinnamylideneacetophenones 1 and (E)-and (Z)-2-styrylchromones

ChemInform Abstract: Z- or E-Configurate
ChemInform Abstract: Z- or E-Configurated γ-Alkylidenebutenolides from a 2-(Trimethylsiloxy)furan and Iodomethacrolein — Stereoselective Synthesis of Z- and E-Freelingyne.
✍ F. VON DER OHE; R. BRUECKNER 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 35 KB 👁 1 views

Alkylidenebutenolides from a 2-(Trimethylsiloxy)furan and Iodomethacrolein -Stereoselective Synthesis of Z-and E-Freelingyne. -Via an aldol/β-elimination approach as key sequence the title products such as (V) and (VI) are prepared. It is noteworthy that an earlier described method with triflic anh