Préparation de fluoro-oxirannes et fluoro-silyloxirannes
✍ Scribed by Thierry Dubuffet; Raymond Sauvêtre; Jean-F. Normant
- Publisher
- Elsevier Science
- Year
- 1988
- Tongue
- English
- Weight
- 368 KB
- Volume
- 354
- Category
- Article
- ISSN
- 0022-328X
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📜 SIMILAR VOLUMES
## Abstract The synthesis of 1‐fluoro‐4,4‐di‐hydroxymethyl‐pentane (I) and its dicarbamate (II) is described. (I) is obtained by classical alkylation of methylmalonic ester with 1‐ bromo‐3‐fluoro‐propane and subsequent reduction with LiAlH~4~, of the fluorinated diester obtained. Treated with phosg
ves of these fluorohelicenes have been synthesized by the photocyclodehydrogenation of 1-fluoro-11-styrylbenzo~c]phenanthrenes (Table 2) and l-fluoro-13-styrylpentahelicenes (Table 4) respectively. The ohotocyclisations to heptahelicenes were accompanied in five cases, by a side reaction, namely a p