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5-Amino-1,2,4-thiadiazoles from 1-Amino-3-iminoisoindolenines

✍ Scribed by Dr. Klaus Leverenz

Publisher
John Wiley and Sons
Year
1973
Tongue
English
Weight
189 KB
Volume
12
Category
Article
ISSN
0044-8249

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✦ Synopsis

systems by the single bonds C7-N2 and C8-N1. The three nitrogen-nitrogen bonds are all shorter than the usual single N-N distance of 1.44w110.' *I, and the N2-N4 distance is only slightly longer than the 1.24A expected for a double bond['0,''! A calculation of the best leastsquares plane passing through the atoms forming the fivemembered ring was performed to determine its conformation, and can be represented by the equation 0.4001 xi0.7802V -0.4808~=1.918

The displacements of the five atoms from this plane (with standard deviations in parentheses) are small but significant N1 0.017(5) A C 7 -0.013(6)8, N 2 0.004(5) 4 N3 0.007(5) + C 8 -0.015(6)A

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✍ Dr. Klaus Leverenz πŸ“‚ Article πŸ“… 1973 πŸ› John Wiley and Sons 🌐 English βš– 197 KB πŸ‘ 1 views

Die aus den Dinitrilen (I) uber die I-Imino-3-methoxyisoindolenine (2) darstellbaren I-Amino-3-imino-isoindoleninium-thiocyanate (3)[11 konnen im Eintopfverfahren durch gleichzeitige Einwirkung von Brom und Natriummethanolat in die 5-Amino-1,2,4-thiadiazole ( 4 ) iibergefuhrt werden. Die Thiadiazole