Raman studies of zinc chloride solutions in presence of ammonium chloride at different pH values
β Scribed by J. Beer; D.R. Crow; R. Grzeskowiak; I.D.M. Turner
- Book ID
- 107768707
- Publisher
- Elsevier Science
- Year
- 1973
- Weight
- 128 KB
- Volume
- 9
- Category
- Article
- ISSN
- 0020-1650
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π SIMILAR VOLUMES
## Abstract Raman spectroscopic studies of the dissolution of polyacrylonitrile (PAN) in aqueous zinc halides are reported. The dissociation constants of aqueous PANβzinc chloride and PANβzinc bromide containing 60β75% wt/wt and 65β80% wt/wt zinc in aqueous polyacrylonitrile solutions, respectively
## Abstract __N__βBenzoylhydrazones (=__Nβ²__βalkylideneβsubstituted benzohydrazides) **1** are allylated efficiently by reaction with allyl bromide (**2**) in the presence of Zn in aqueous NH~4~Cl solution. The products **3** are formed in excellent yields (85β94%) within 35β50β min (__Scheme, Table