## Abstract Some new 1,2,3โtriazolo[4,5โ__d__]โ1,2,4โtriazolo[4,3โb]pyridazines were prepared starting from the corresponding 1,2,3โtriazolo[4,5โ__d__]pyridazines __via__ the formation of the 1,2,4โtriazole ring, by condensation of an appropriate monocarbon fragment with the 4โhydrazino substituent
Syntheses of 1,4-butanediamine-1,1,4,4-d4, 1,4-butanediamine-2,2,3,3-d4, and their respective bis(ammonium nitrate) salts
โ Scribed by Alan P. Marchand; N. Satyanarayana; Robert L. McKenney Jr.; Stephen R. Struck
- Publisher
- John Wiley and Sons
- Year
- 1988
- Tongue
- French
- Weight
- 258 KB
- Volume
- 25
- Category
- Article
- ISSN
- 0022-2135
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โฆ Synopsis
Syntheses o f t h e t i t l e compounds from d i e t h y l succinate and from dimethyl acetylenedicarboxylate i n 16% and 18% o v e r a l l y i e l d , respectively, are described; a procedure f o r converting these s p e c i f i c a l l y deuterated diamines i n t o the corresponding bis(ammonium n i t r a t e ) s a l t s i n 62% and 66% y i e l d , r e s p e c t i v e l y , i s presented.
๐ SIMILAR VOLUMES
## Abstract The reaction of NโarylโCโethoxycarbonyl nitrilimines with [1,2,4]triazepinโ3,5โdithione leads to title compounds. The 1,3โdipolar cycloaddition is completely peri and regioselective. The preferred orientation of addition is predicted correctly by AM~1~ calculation.
## Abstract For Abstract see ChemInform Abstract in Full Text.