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The mass spectral fragmentation of 2-aryl-N, N′-dimethyl-1,3-imidazolidines and 2-aryl-1-3-dioxolanes

✍ Scribed by J. W. Horodniak; J. Wright; N. Indictor

Publisher
John Wiley and Sons
Year
1971
Tongue
English
Weight
300 KB
Volume
5
Category
Article
ISSN
1076-5174

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✦ Synopsis

2-Aryl-N,N-dimethyl-1,3-imidazolidines and 2-aryl-1,3-dioxolanes were subjected to 70 eV spectral analysis. Fragmentation pathways for both series of compounds are suggested. Aryl us. benzylic hydrogen fragmentations were subjected to Hammett cr+p plots. Incipient charge on the benzyl carbonium ion was stabilized by electron donating groups in both series of compounds. Dioxolanes were more sensitive to substituent effects ( p = -0.639) than the imidazolidines ( p = -0.251) implying that the positive charge on the fragmenting ion is more localized at the benzylic position of the imidazolidines than of the dioxolanes.

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