a-halohydrazides react with 2-amino pyridine to give symetrically substituted N-amino maleimides. We have shown that this reaction proceeds through the formation of 4-hydroxy imidazopytidines. This result open a new route to dissymetrically substituted N-amino maleimides. The hydrolysis of Namino m
Structure et réactions du composé d'addition: triphénylphosphine - anhydride maléique
✍ Scribed by R. F. Hudson; P. A. Chopard
- Publisher
- John Wiley and Sons
- Year
- 1963
- Tongue
- German
- Weight
- 506 KB
- Volume
- 46
- Category
- Article
- ISSN
- 0018-019X
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✦ Synopsis
Abstract
The structure of the adduct between maleic anhydride and triphenylphosphine has been determined by direct synthesis and spectral analysis. It is analogous to a phosphine methylene derivative (WITTIG reagent) stabilized by an u‐carbonyl group. With aldehydes, it gave none or very poor yields of the expected olefins; water (or alcohols) caused the anhydride ring to open, instead of forming triphenylphosphine oxide plus the corresponding hydrocarbon.
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