Schwager 4472 synthesec7) und bei der Synthese von Morphinandienonen (8) durchgeftihrt, unseres Wissens aber sind Dioxaspirodecadiendione 2 durch anodische Oxidation von Hydro-xyphenoxyessigsauren oder deren Alkylethern bisher noch nicht hergestellt worden. Cyclische Voltammetrie der Carbonsauren 1
Diels-alder reactions of 8-trimethylsilyloxy-1,4-dioxaspiro[4,5]deca-6,8-diene
✍ Scribed by Shang-Cheng Hung; Chun-Chen Liao
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- French
- Weight
- 198 KB
- Volume
- 32
- Category
- Article
- ISSN
- 0040-4039
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## Abstract 1,5,8‐Triphosphaisolumibullvalenes (1,5,8‐triphosphatetracyclo[4.4.0.0^2,8^.0^5,7^]deca‐3,9‐dienes) **3**, when suitably substituted, undergo thermal rearrangement to afford the 1,1b,2a‐triphosphahomoquadricyclanes (tetrahydro‐1__H__‐1,1b,2a‐triphosphadicyclopropa[__cd__,__gh__]‐pentale
The limited thermal stability of the polycyclic dione 1 can be circumvented by reacting its derivatives, hydroxyketone 3 and diol 4 with tetrachlorothiophene dioxide (6d) to yield the mono-Diels-Alder adduct 8 and rearranged polycyclic ether 11, respectively. The structures of both new products were