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Chemie von ?-Aminonitrilen 22. Mitteilung Regioselektive Synthese und Kristallstruktur von Uroporphyrinogen-(Typ I)-octanitril
- Source :
- Helvetica Chimica Acta. 80:1421-1442
- Publication Year :
- 1997
- Publisher :
- Wiley, 1997.
-
Abstract
- Chemistry of α-Aminonitriles. Regioselective Synthesis and Crystal Structure of Uroporphyrinogen (Type I) Octanitrile A regioselective synthesis of uroporphyrinogen-octanitrile (type I) based on the strategy of multiple use of (dimethylmethylidene)ammonium iodide for stepwise regioselective functionalization of the pyrrole nucleus is described. This uroporphyrinogen derivative is remarkably stable and beautifully crystallizes in space group P1 with one molecule per unit cell. The crystal structure of the compound shows interesting conformational characteristics which are interpreted to be caused by subtle stereoelectronic effects. The English Footnotes to Schemes 1-3 and Figs. 1-12 provide an extension of this summary.
Details
- ISSN :
- 15222675 and 0018019X
- Volume :
- 80
- Database :
- OpenAIRE
- Journal :
- Helvetica Chimica Acta
- Accession number :
- edsair.doi...........deeee0f21286891a3ab55c4c619399f9