Facile synthesis of strained bridgehead olefins via the intramolecular Wittig reaction
✍ Scribed by Dauben, William G.; Ipaktschi, Junes.
- Book ID
- 125847975
- Publisher
- American Chemical Society
- Year
- 1973
- Tongue
- English
- Weight
- 240 KB
- Volume
- 95
- Category
- Article
- ISSN
- 0002-7863
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📜 SIMILAR VOLUMES
The phosphoranes 3 formed from the reaction of a variety of keto alcohols 1 and (triphenylphosphoranylidene)ethenone 2 undergo intramolecular Wittig cyclization to afford the unsaturated lactones in moderate yields. 0
## Abstract A convenient synthesis of the strained methylene‐bridged __trans__‐cyclooctenes bicyclo[3.3.1]‐1 (2)‐nonene **(1)**, bicyclo[4.2.1]‐1(8)‐nonene **(2)**, and bicyclo[4.2.1]‐1(2)‐nonene **(3)** by the intramolecular __Wittig__ reaction is described (see __Schemes 1–4__). The (3‐oxocycloal
In the past few years there has been a rapid growth of interest in the n preparation of strained bridgehead olefins'. Until recently the reported synthetic approaches all involved a separate construction of the ring system prior to introduction of the double bond. In 1973, however, a facile synthesi
A synthesis of bicyclo[3.3.llnon-1-ene 1 and of a 1O:l mixture of b?cyclo[4.2.llnon-l(8)-ene 2 and bicyclo[4.2.lln&-l(2)-ene 3 by gas-phase pyrolysis of the correspondTng bridgehead acetates and chlor:des is reported. A number of different syntheses are available for the preparation of the methylen
## Abstract The stereochemical aspects of the intramolecular __Ramberg__‐__Bäcklund__ reaction, __i.e.__ the 1,3‐elimination of hydrogen halide followed by sulfur dioxide extrusion, have been studied on the α‐bromosulfones of the 1‐thiadecalinThroughout this paper ‘1‐thiadecalin’ will be used in pl