An efficient method for the preparation of alkylidenecyclopropanes
โ Scribed by Jeffrey A. Stafford; John E. McMurry
- Publisher
- Elsevier Science
- Year
- 1988
- Tongue
- French
- Weight
- 217 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0040-4039
No coin nor oath required. For personal study only.
โฆ Synopsis
Yields obtained from wittig reactions with cyciopropylidenetriphenylphosphorane are great/y improved by addition of the phase-transfer catalyst, TDA-1.
๐ SIMILAR VOLUMES
The reaction of alkylidenecyclopropanes with HCl or with HBr proceeds very smoothly at 120ยฐC to produce the corresponding homoallylic halides stereoselectively in good to excellent yields. For example, the reaction of (1-phenylbenzylidene)cyclopropane, (1-butylpentylidene)cyclopropane and octylidene
High water-absorbent polyacrylates could be prepared by concentrated aqueous solution polymerization within a short time period, heating the monomer mixture by water bath. The influences of initiator content, bath temperature, crosslinker content (Cc), and degree of neutralization on water absorbenc