𝔖 Bobbio Scriptorium
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Untersuchung des Tautomeriegleichgewichtes der konjugaten Säure von 4-Dimethylamino-azobenzol mit Kernresonanz

✍ Scribed by Iris Gränacher; H. Suhr; A. Zenhäusern; Hch. Zollinger


Publisher
John Wiley and Sons
Year
1961
Tongue
German
Weight
180 KB
Volume
44
Category
Article
ISSN
0018-019X

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✦ Synopsis


A scries of d , 1and meso-l,3-diaryl-4,5-diphenylimidazolidines (11) has been prcpared by condensation of formaldehyde with the corresponding d , Ior meso-1,2tliarylamino-l,2-diplicnylcthanes (I). Similarly, several d, Z-1,3-diaryl-4,5-diphenyl-2-methylimidazolidines (111) have been synthesized from acetaldehyde and diamines d , 1-1.

Significant differences in melting points and UV. spcctra have been found to exist between the d,l and weso forms of the imidazolidines 11.