Several preparative resolutions of 5,5-disubstituted hydantoins have been achieved via fractional crystallization of diastereoisomeric salts. The process can be extended by making use of the difference between the variation of solubilities of the hydantoins and their salts with a-methylbenzylamine a
Mass spectrometric beheviour of some 5,5-diphenylglycocyamidine and -hydantoin derivatives
✍ Scribed by J. Tamás; G. Czira; Gy. Simig; K. Lempert
- Publisher
- John Wiley and Sons
- Year
- 1975
- Tongue
- English
- Weight
- 237 KB
- Volume
- 10
- Category
- Article
- ISSN
- 1076-5174
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✦ Synopsis
Abstract
The mass spectra and main fragmentation pathways are presented for thirteen 1‐ and 3‐substituted 5,5‐diphenylglycocyamidine and ‐hydantoin derivatives. The principal decomposition routes of these compounds are also of diagnostic value for ascertaining positional isomerism when the substituents are eliminated in the initial stage of fragmentation.
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